TWI261832B - Optical disc and manufacturing method thereof and medium reproduction device - Google Patents

Optical disc and manufacturing method thereof and medium reproduction device Download PDF

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Publication number
TWI261832B
TWI261832B TW093133537A TW93133537A TWI261832B TW I261832 B TWI261832 B TW I261832B TW 093133537 A TW093133537 A TW 093133537A TW 93133537 A TW93133537 A TW 93133537A TW I261832 B TWI261832 B TW I261832B
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TW
Taiwan
Prior art keywords
reflectance
information
optical disc
recording
area
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TW093133537A
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Chinese (zh)
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TW200519937A (en
Inventor
Reiji Tamura
Hiroshi Shirai
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Hitachi Maxell
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Publication of TW200519937A publication Critical patent/TW200519937A/en
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Publication of TWI261832B publication Critical patent/TWI261832B/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24079—Width or depth
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/268—Post-production operations, e.g. initialising phase-change recording layers, checking for defects
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/21—Circular sheet or circular blank

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  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

The subject of the present invention targets at providing an optical disc and medium reproduction device thereof. The optical disc is independent of the relationship between the reflectivity of the recording area and the non-recorded area of the optical disc, and the control data and user data are quickly and reliably reproduced. The optical disc is characterized by including a first area recording the user data, and a second area recording the data pertinent to the reflectivity of the optical disc, wherein a plurality of marks extending in a radial direction are aligned along the track direction, and a most appropriate amplification of the reproduction signal is formed in accordance with the data pertinent to the reflectivity of the optical disc.

Description

(1) 1261832 九、發明說明 【發明所屬之技術領域】 技術領域 本發明乃關於光碟及其製造方法以及記錄再生裝置， 更具體地說，本發明乃關於穩定地進行在反射率不同的光 碟上記錄的資訊的再生的光碟及其製造方法以及記錄再生 裝置。 【先前技術】 背景技術 在近年出現的D V D中，不僅有資訊再生專用的0'70-ROM，DVD-Video，還列舉有可進行資訊記錄的DVD-R、 可進行資訊的改寫的 DVD-RAM、DVD-RW等。於是，不 僅作爲在 V TR中變化的圖像記錄再生媒體，而且作爲電 腦用的大容量媒體，DVD市場迅速地擴大。另外，最近 ，伴隨數位播放的普及，對可與高精度彩色圖像，長時間 錄影相對應的媒體的需求，以及可與日益增加的數位資料 相對應的大容量的存儲媒體的需求在增加。 在過去，在光碟的領域，人們提出了用於提高密度的 各種技術。比如，人們提出有通過採用波長較短的藍色雷 射（λ二4 0 5 nm )，形成微小的記錄標記的方法，通過在 光碟的凸軌（】a n d )與凹軌（g 1· 〇 〇 v e )兩者中，記錄資訊 ，提高密度的方法等。另外，從格式化的觀點來說，就光 - 4 - (2) 1261832 碟提出各種方案，不僅對資料記錄部，還對位址資訊等的 標題部結構下了功夫，保存。比如，在iD-photo中，使 導引溝沿軌道的半徑方向偏向，僅僅在記錄軌道的一側， 記錄標題部的資訊，由此，可提高格式化效率，使以不間 斷的長的方式構成記錄軌道成爲可能。 就可進行資訊的改寫的光碟的技術來說，一般採用 DVD-RAM、DVD-RW等相變記錄方式。在相變記錄方式 的光碟中，記錄層採用相變材料，基本上，分別對應於相 變材料的結晶狀態（未記錄狀態）和非晶質狀態（記錄狀 態）記錄“ 〇 ”與“ 1 ”的資訊。另外，由於在形成於記錄 層內的結晶狀態與非晶質狀態的區域，折射率不同，故按 照使變爲結晶狀態的部分和使變爲非晶質狀態的部分的反 射率的差爲最大的方式，設計構成光碟的各層的折射率， 膜厚等。在相變記錄方式的光碟中，對結晶的部分和非晶 質的部分照射光束，檢測來自光碟的各部分的反射光量的 不同，檢測記錄於記錄層內的“ 〇”與“ 1 ” 。 爲了對相變記錄方式的光碟的記錄層的規定位置進行 非晶質化處理（通常，將該動作稱爲“記錄”），照射較 高功率的光束，進行加熱，使記錄層的照射部分的溫度在 記錄層材料的熔點以上。另一方面，爲了對記錄層的規定 位置進行結晶處理（通常，將該動作稱爲“抹除”），照 射較低功率的光束，按照記錄層的照射部分的溫度在記錄 層材料的熔點以下，並且在結晶溫度附近的方式進行加熱 -5- (3) (3)1261832 。像這樣，在相變記錄方式的光碟中，通過調節照射於記 錄層上的光束的照射功率，可在非晶質狀態和結晶狀態之 間，使記錄層內的規定部分可逆地變化。 另外，在過去的相變記錄方式的光碟中，不僅增加記 錄層內的非晶質狀態和結晶狀態的反射率差，還通過調整 雨者的反射率的大小關係，嘗試提高光碟的各種特性。比 如，在普通的DVD-RAM、DVD-RW中，按照與未記錄狀 態相對應的結晶狀態的部分的反射率增加，與記錄狀態相 對應的非晶質狀態部分的反射率降低的方式設定。於是， 在這樣的光碟中，由於將位址資訊記錄於未記錄狀態的區 域，故具有按照高S/N獲得位址資訊，位址資訊再生的可 靠性提高的優點。另外，在這樣的光碟中，由於聚焦（ f 〇 cu s )伺服信號，尋軌伺服信號均從未記錄狀態的區域 獲得，故具有獲得足夠強度的聚焦（focus )伺服信號， 尋軌伺服信號，可穩定地進行尋軌控制等的優點。 另一方面，就可一次性地進行資訊記錄的一次性寫入 (write once )光碟的技術來說，像DVD-R等所採用的那 樣，一般採用通過具有有機色素的材料，形成記錄層的方 法。在含有有機色素的記錄層上進行資訊記錄的場合，照 射較高功率的光束，由此，産生記錄層中的有機色素的光 學常數變化、記錄層和接近該記錄層的基板，反射層的變 形，記錄層中，記錄層介面處産生的空隙等中的至少一種 ，在記錄層中，形成記錄標記。在DVD-R中，與DVD- (4) 1261832 R A Μ，D V D · R W相同，按照未記錄狀態的反射率增力□，記 錄狀態的反射率降低的方式設定’由此’按照高S /N，獲 得位址資訊，有位址資訊再生的可靠性提高的優點。另外 ，由於聚焦（focus )伺服信號，尋軌伺服信號均從未記 錄狀態的區域獲得，故具有獲得足夠強度的聚焦（cu s )伺Μ信號，尋軌伺服信號，可穩定迪進行尋軌控制等的 優點。 此外，在本說明書中，像現有的DVD〜RAM、DVD-RW、DVD-R那樣，通過照射光束來記錄資訊5光束的照 射部（記錄狀態的部分）的反射率從較高値，變爲較低値 的光碟稱爲H i g h t 〇 L 〇 w盤，或簡稱爲H L盤。一般，相 變記錄方式的H L盤包括下述結構，在該結構中，按照從 光束射入側起的順序，至少具有由透射性介電質形成的保 護層、相變記錄層、由透射性介電質形成的中間層和由金 屬形成的熱擴散層（還具有反射層的功能）。另外’採用 的包含有機色素的記錄層的H L盤一般具有下述的結構， 按照從光束射入側起的順序，至少具有包含有機色素的記 錄層和由金屬形成的熱擴散層（還具有反射層的功能）。 還有，在現有的相變記錄方式的光碟中，還提出有按 照與光碟的記錄層內的未記錄狀態相對應的結晶狀態的區 域的反射率較低，與記錄狀態相對應的非晶質狀態的區域 的反射率較高的方式設定的光碟（比如，參照專利文獻1 )。專利文獻]公開的光碟具有當在舊的資訊上重寫（ -7- (5) 1261832 ο λ/ e r w 1· i t e )新的資訊時，舊資訊的被抹除的較大優點。 另一方面，在採用含有有機色素的記錄層的光碟（在 下面稱爲“有機色素型的光碟）中，可按照未記錄狀態的 區域的反射率較低，與記錄狀態柺對應的區域的反射率較 高的方式設定。具體來說，在形成上述的記錄標記時，極 力垲避免記錄層、基板和反射層的變形，記錄層中·或記 錄層介面的空隙的發生，根據記錄層中的有機色素的光學 常數變化，彤成記錄標記，這樣，可降低未記錄狀態的區 域的反射率，與記錄狀態相對應的區域的反射率可增加。 在這樣的光碟中5由於未記錄區域的反射率降低，故具有 記錄靈敏度提高的優點。 此外，在本說明書中，像專利文獻1所公開的光碟那 樣，照射光束來記錄資訊，由此，將光束的照射部（記錄 狀態的部分）的反射率從較低値，變爲較高値這樣的光碟 ，稱爲“ Low to High盤”，或簡稱爲“ LH盤”。相變記 錄方式的LH盤具有記錄層/介電質層、記錄層/金屬反射 層、介電質層/記錄層/介電質層/金屬反射層等的多層膜的 結構，利用構成多層膜的膜間的干涉效果，由此，降低與 未記錄狀態相對應的結晶狀態的區域的反射率，提高與記 錄區域相對應的非晶質狀態的區域的反射率。 再有，現在，提出有 S i 0 2 / G e 2 S b 2 T e 5 / Z n S - S i 0 2 / A 1合金形成的多層膜結構的相 變記錄方式的LH盤（比如，參照非專利文獻1 )。同樣 1261832 (6) 在該LH盤中’利用構成多層膜的各膜之間的 降低與未記錄狀態相對應的結晶狀態的區域的 高與旨2錄狀態相對應的非晶質狀態的區域的反！ 惠利文獻]:.1 P特許2 5 ] 2 0 8 7號文獻（第4 ) 邡專利文獻]:P r 0 c · S P 】£ V 〇 ] · 3 4 0 !，ρ · 1 〇 3 【發明內容】 像上述那樣，現在，在相變記錄方式的光 有機色素型的光碟的領域，正在對H L和L Η 行硏究。在將這些光碟安裝於現有的記錄再生 行資訊的記錄和再生的場合，由於膜的組成的 下述這樣的問題。（1 )在HL盤與LH盤中， (在相變的場合，結晶狀態）的反射率不同。 錄狀態的反射率與資訊記錄後的平均反射率之 HL盤和LH盤中，是不同的。即，根據光碟是 是LH盤的情況，未記錄狀態和記錄狀態的區 的値及大小關係不同，由此，所獲得的再生信 不同。於是，在同一記錄再生裝置中，産生下 即，無法對HL盤和LH盤這兩者都穩定地， 靠性進行資訊再生。 作爲解決上述問題的方法，人們考慮下述 如，將安裝於記錄再生裝置中的光碟爲HL盤 干涉效果， 反射率，提 討率。 〜6頁，圖1 ，i 998 碟的領域和 盤這兩者進 裝置中，進 差異，産生 未記錄狀態 (2 )未記 間的關係在 HL盤，還 域的反射率 號的電平也 述的問題， 以較高的可 的方法，比 和LH盤中 (7) 1261832 的哪一種（在下面也稱爲“光碟的種類”）的資 於保存光碟的物理格式資訊的控制資料區域，根 ，進行適合的增益調整，再生使用者資訊等。 一般，光碟的控制資料由壓花凹坑形成，控 域和使用者資料區域基本鄰接地形成。由此，在 方式的光碟和有機色素型的光碟中，不僅在使周 域，而且在控制資料區域，分別形成相變膜，保 及有機色素膜等。在這樣的現有的光碟，即使在 的種類有關的資訊記錄於控制資料區域中的情況 光碟的種類，控制資料區域的反射率也變化，由 不進行增益調整，則不僅無法高精度地再生控制 不能高精度地再生與光碟的種類有關的資訊。於 制資料區域，記錄與光碟的種類有關的資訊的光 須對應於光碟的種類，進行再生信號的增益調整 再生與光碟的種類有關的資訊和控制資料，由此 述的問題，即，增益調整花費時間，無法快速地 資料和使用者資料的再生。但是，目前沒有解決 方法，另外，也未出現對應於光碟種類（H L盤 )增益的最佳化方法。 本發明是爲瞭解決上述的已有技術的問題而 本發明的目的在於提供光碟及其記錄再生裝置， H L盤和L Η盤中的任何一種，可快速地，並且 可靠性再生控制資料和使用者資料。 訊，記錄 據該資訊 制資料區 相變記錄 者資料區 護膜，以 將與光碟 下，伴隨 此，如果 資料，也 是，在控 碟中，必 ，同時， ，具有下 進行控制 該問題的 或 LH盤 提出的， 該光碟爲 以較高的 -10- (8) 1261832 本發明的第1形式提供一種光碟，其特徵在於其包括 第1區域，該第1區域記錄使用者資訊；第2區域，在該第2 區域中，沿該光碟的半徑方向延伸的多個標記沿軌道方向 排列，在該第2區域中，記錄有與該光碟的反射率有關的 資訊。 一般的D V D等的光碟中，在光碟的內周附近的區域 ，設置有稱爲 B C A ( B u 1. s t C υ 11 i n g A r e a )的區域。在 B C Λ中，沿光碟的半徑延伸的多個標記沿軌道方向排列 (條碼狀的標記組）5在該區域，記錄光碟的媒體ID， 版本（v e r s i ο η )資訊等的盤的識別資訊。該條碼狀的標記 組沿半徑方向，比如，按照約]m m的長度形成。在本發 明的光碟中，在形成有B C A這樣的條碼狀的標記組的區 域（第2區域），記錄與光碟的反射率有關的資訊。另外 ，在下面，也將本發明的光碟的第1區域，稱爲“使用者 資料區域”，將第2區域稱爲“條碼區域”。 在本發明的光碟中，與上述光碟的反射率有關的資訊 最好爲表示第1區域的未記錄狀態的反射率與記錄狀態的 反射率之間的關係的資訊。即，，在本發明的光碟的條碼 區域，最好記錄表示光碟是HL盤和LH盤中的哪個的資 訊。另外，也可在本發明的光碟的條碼區域，記錄光碟的 使用者資料區域的記錄狀態和未記錄狀態的具體的反射率 的値。 由於形成於本發明的光碟的條碼區域的條碼狀的標記 -11 - 1261832 Ο) 組沿半徑方向，按照足夠的長度（比如，約1 m m )形成， 故在再生條碼區域的資訊的場合，即使在不嚴格地進行光 束的半徑方向的位置控制的情況下，仍可容易再生條碼資 訊。即，條碼區域的資訊可在不進行嚴格地尋軌控制的情 況下，通過光學頭，僅僅通過尋軌的方式，就可對條碼區 域進行再生。於是，記錄於條碼區域中的與先碟的反射率 有關的資訊在較短時間容易獲得，根據記錄於條碼區域的 與光碟的反射率的資訊，可快速地進行適合的再生信號的 增益調整。其結杲是，在緊接條碼區域，再生光碟的控制 資料區域和使用者資料區域的資訊時，不必對應於光碟的 種類，進行增益調整，可快速地再生這些資訊。另外，由 於在再生控制資料區域和使用者資料區域的資訊之前，由 於獲得了再生信號的最佳放大率，控制資料區域和使用者 資料區域的資訊與尋軌用的伺服信號在與光碟的種類無關 的情況下，可得到足夠的振幅，可進行可靠性更高的資訊 再生和尋軌控制。 本發明的優點在於，在光碟中的第1區域，形成同心 圓狀或螺旋（spiral )狀的導引溝，使該導引溝沿該光碟 的半徑方向偏向，由此，記錄位址資訊。 在本發明的光碟中，上述使用者資訊至少記錄於上述 導引溝和導引溝間隔中之一，並且，最好，在第1區域的 軌道間距TP，用於資訊的記錄再生的光束的波長λ ，與 聚光透鏡（lens )的數値口徑ΝΑ之間，最好滿足下述關 -12 - (12) (12)1261832BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk, a method of manufacturing the same, and a recording and reproducing device, and more particularly to a stable operation on a disk having a different reflectance. A recorded optical disc, a method of manufacturing the same, and a recording and reproducing apparatus. [Prior Art] In the DVDs which have appeared in recent years, not only the 0'70-ROM and DVD-Video dedicated to information reproduction but also DVD-R for information recording and DVD-RAM for information rewriting are listed. , DVD-RW, etc. Therefore, the DVD market has rapidly expanded not only as an image recording and reproducing medium that changes in the VTR but also as a large-capacity medium for computers. Further, recently, with the spread of digital broadcasting, there is an increasing demand for a medium that can correspond to high-precision color images, long-time video recording, and a large-capacity storage medium that can cope with an increasing number of digital materials. In the past, various technologies for increasing density have been proposed in the field of optical discs. For example, it has been proposed to form a tiny recording mark by using a shorter wavelength blue laser (λ 2 405 nm), through the convex track (] and ) and the concave track (g 1· 〇 on the optical disk). 〇ve ) In the two, record information, methods to increase density, etc. In addition, from the viewpoint of formatting, various schemes have been proposed for the optical disc, and not only for the data recording unit but also for the header structure of the address information and the like. For example, in the iD-photo, the guiding groove is deflected in the radial direction of the track, and only the side of the recording track is recorded, and the information of the head portion is recorded, thereby improving the formatting efficiency and making it long and uninterrupted. Recording tracks is possible. For the technology of a disc that can rewrite information, a phase change recording method such as DVD-RAM or DVD-RW is generally used. In the phase change recording type of optical disc, the recording layer is made of a phase change material, and basically, "“" and "1" are recorded corresponding to the crystalline state (unrecorded state) and the amorphous state (recorded state) of the phase change material, respectively. Information. Further, since the refractive index is different between the crystalline state and the amorphous state formed in the recording layer, the difference in reflectance between the portion which becomes the crystalline state and the portion which becomes the amorphous state is maximized. The way to design the refractive index, film thickness, etc. of the layers constituting the optical disc. In the optical disk of the phase change recording method, the crystal portion and the amorphous portion are irradiated with a light beam, and the difference in the amount of reflected light from each portion of the optical disk is detected, and "〇" and "1" recorded in the recording layer are detected. In order to amorphize the predetermined position of the recording layer of the optical disk of the phase change recording method (generally, this operation is referred to as "recording"), a light beam of a higher power is irradiated and heated to make the irradiated portion of the recording layer The temperature is above the melting point of the recording layer material. On the other hand, in order to perform crystallization treatment on a predetermined position of the recording layer (generally, this operation is referred to as "erasing"), a light beam of a lower power is irradiated, and the temperature of the irradiated portion of the recording layer is below the melting point of the recording layer material. And heating in the vicinity of the crystallization temperature -5 - (3) (3) 1261832. As described above, in the optical disk of the phase change recording method, by adjusting the irradiation power of the light beam applied to the recording layer, the predetermined portion in the recording layer can be reversibly changed between the amorphous state and the crystal state. Further, in the optical disk of the conventional phase change recording method, not only the difference in reflectance between the amorphous state and the crystalline state in the recording layer is increased, but also the various characteristics of the optical disk are attempted by adjusting the magnitude relationship of the reflectance of the rainer. For example, in a conventional DVD-RAM or DVD-RW, the reflectance of the portion corresponding to the crystal state corresponding to the unrecorded state is increased, and the reflectance of the amorphous state portion corresponding to the recorded state is lowered. Therefore, in such a disc, since the address information is recorded in the unrecorded area, the address information is obtained in accordance with the high S/N, and the reliability of the address information reproduction is improved. In addition, in such a disc, since the tracking (f 〇 cu s ) servo signal is obtained from the region of the unrecorded state, the focus servo signal having sufficient intensity is obtained, and the tracking servo signal is obtained. The advantages of tracking control and the like can be stably performed. On the other hand, in the technique of once writing a write-once optical disc for information recording, as used in DVD-R, a recording layer is generally formed by using a material having an organic pigment. method. When information recording is performed on a recording layer containing an organic dye, a light beam of a higher power is irradiated, thereby causing a change in optical constant of the organic dye in the recording layer, a recording layer, and a substrate close to the recording layer, and deformation of the reflective layer. At least one of a void or the like generated at the recording layer interface in the recording layer, and a recording mark is formed in the recording layer. In the DVD-R, similar to DVD-(4) 1261832 RA Μ, DVD · RW, the reflectance is increased according to the unrecorded state, and the reflectance of the recording state is lowered. , obtaining address information, and having the advantage of improving the reliability of address information reproduction. In addition, due to the focus servo signal, the tracking servo signal is obtained from the region of the unrecorded state, so it has a focusing (cu s ) servo signal with sufficient intensity, and the tracking servo signal can stabilize the tracking control. The advantages of etc. Further, in the present specification, as in the conventional DVD to RAM, DVD-RW, and DVD-R, the reflectance of the irradiation portion (the portion in the recording state) in which the information beam 5 is recorded by the irradiation of the light beam is changed from a higher level to a higher level. The low-profile disc is called the H tt 〇L 〇w disk, or simply the HL disk. In general, the HL disk of the phase change recording method includes a structure in which at least a protective layer, a phase change recording layer formed of a transmissive dielectric, and a transmittance are formed in order from the light beam incident side. An intermediate layer formed of a dielectric and a thermal diffusion layer formed of a metal (having also a function of a reflective layer). Further, the HL disk of the recording layer containing the organic dye generally has a structure having at least a recording layer containing an organic dye and a thermal diffusion layer formed of a metal (also having a reflection) in order from the light beam incident side. Layer function). Further, in the conventional phase change recording type optical disc, it is also proposed that the reflectance in the region corresponding to the unrecorded state in the recording layer of the optical disc is low, and the amorphous state corresponding to the recorded state is present. The optical disk set in such a manner that the reflectance of the state of the state is high (for example, refer to Patent Document 1). The optical disc disclosed in the patent document has a great advantage that the old information is erased when the new information is rewritten (-7-(5) 1261832 ο λ/ e r w 1· i t e ) in the old information. On the other hand, in the optical disk using the recording layer containing the organic dye (hereinafter referred to as "organic dye type optical disk"), the reflectance of the region which is in the unrecorded state is low, and the reflection of the region corresponding to the recording state is turned. Specifically, in the formation of the recording mark described above, the deformation of the recording layer, the substrate, and the reflective layer is prevented as much as possible, and the occurrence of voids in the recording layer or the recording layer interface is generated according to the recording layer. The optical constant of the organic dye changes to a recording mark, so that the reflectance of the unrecorded state can be lowered, and the reflectance of the region corresponding to the recorded state can be increased. In such a disc 5 due to the reflection of the unrecorded area In the present specification, as in the optical disc disclosed in Patent Document 1, the light beam is irradiated to record information, thereby reflecting the irradiation portion (portion of the recording state) of the light beam. The rate changes from lower 値 to higher 値 such as “Low to High Disk” or simply “LH Disk”. The LH disk of the mode has a structure of a multilayer film of a recording layer/dielectric layer, a recording layer/metal reflective layer, a dielectric layer/recording layer/dielectric layer/metal reflective layer, and the like, using an interlayer film constituting the multilayer film By the interference effect, the reflectance of the region in the crystalline state corresponding to the unrecorded state is lowered, and the reflectance of the region in the amorphous state corresponding to the recording region is improved. Further, now, S i 0 is proposed. 2 / G e 2 S b 2 T e 5 / Z n S - S i 0 2 / A 1 LH disk of a phase change recording method of a multilayer film structure (see, for example, Non-Patent Document 1). Similarly, 1261832 ( 6) In the LH disk, 'the difference between the film forming the multilayer film and the region of the amorphous state corresponding to the unrecorded state is higher than the region of the amorphous state corresponding to the recorded state. Li Literature]:.1 P License 2 5 ] 2 0 8 7 (4th) 邡 Patent Literature]: P r 0 c · SP 】 £ V 〇] · 3 4 0 !, ρ · 1 〇 3 [Invention In the field of the light organic dye type optical disc of the phase change recording method, it is HL and L Η In the case where these optical discs are mounted on the recording and reproduction of the conventional recording and reproducing line information, the following problems occur in the composition of the film. (1) In the HL disk and the LH disk, (in the case of phase change) The reflectance of the crystalline state is different. The reflectance of the recorded state is different from that of the HL disk and the LH disk of the average reflectance after the information is recorded. That is, according to the case where the optical disk is an LH disk, the unrecorded state and the record are recorded. The relationship between the size and the size of the state is different, and thus the obtained reproduction signal is different. Therefore, in the same recording/reproducing device, both the HL disk and the LH disk cannot be stably generated, and the reliability is performed. Information regeneration. As a method for solving the above problem, one considers, for example, that the optical disk mounted in the recording/reproducing device is an HL disk interference effect, a reflectance, and a resolution. ~6 pages, Figure 1, i 998 discs of the field and the disc into the device, into the difference, resulting in an unrecorded state (2) unrecorded relationship in the HL disk, also the level of the reflectivity number of the domain The problem described, in a higher-availability method, and which of the (7) 1261832 in the LH disk (also referred to as "the type of the optical disk" below) is the control data area for saving the physical format information of the optical disk, Root, perform appropriate gain adjustment, regenerate user information, etc. Generally, the control data of the optical disc is formed by embossed pits, and the control area and the user data area are formed substantially adjacently. As a result, in the optical disc and the organic dye type optical disc of the embodiment, a phase change film is formed not only in the peripheral region but also in the control data region, and the organic dye film is preserved. In such a conventional optical disc, even if the type-related information is recorded in the control data area, the reflectance of the control data area changes, and if the gain adjustment is not performed, not only the high-precision reproduction control cannot be performed. Reproduce information about the type of disc with high precision. In the data area, the information of the information relating to the type of the optical disc is recorded corresponding to the type of the optical disc, and the gain adjustment of the reproduced signal is performed to reproduce the information and control data relating to the type of the optical disc, and the problem described above, that is, the gain adjustment It takes time to reproduce data and user data quickly. However, there is currently no solution, and there is no optimization method corresponding to the gain of the disc type (H L disc). SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and an object of the present invention is to provide an optical disc and a recording and reproducing apparatus thereof, any of an HL disc and an L disc, which can quickly and reliably reproduce control data and use. Information. News, according to the information system data area changer data area protection film, to be with the CD, accompanied by this, if the data, also, in the control disc, must, at the same time, have the next control to the problem or The optical disc is provided in the first form of the present invention, which comprises a first area, the first area records user information, and the second area is provided by the LH disc. In the second region, a plurality of marks extending in the radial direction of the optical disk are arranged in the track direction, and information on the reflectance of the optical disk is recorded in the second region. In a general disc of D V D or the like, a region called B C A ( B u 1. s t C υ 11 i n g A r e a ) is provided in a region near the inner circumference of the optical disc. In B C ,, a plurality of marks extending along the radius of the optical disk are arranged in the track direction (bar coded mark group) 5 in this area, and the identification information of the disk such as the media ID of the optical disk, the version (v e r s i ο η ) information, and the like is recorded. The bar-shaped mark group is formed in the radial direction, for example, by a length of about m m . In the optical disc of the present invention, information relating to the reflectance of the optical disc is recorded in a region (second region) in which a bar-shaped mark group such as B C A is formed. Further, in the following, the first region of the optical disk of the present invention is referred to as "user data region", and the second region is referred to as "barcode region". In the optical disc of the present invention, the information relating to the reflectance of the optical disc is preferably information indicating the relationship between the reflectance of the unrecorded state of the first region and the reflectance of the recorded state. That is, in the barcode area of the optical disc of the present invention, it is preferable to record information indicating which of the HL disc and the LH disc the optical disc is. Further, in the barcode area of the optical disc of the present invention, the recording state of the user data area of the optical disc and the specific reflectance of the unrecorded state may be recorded. Since the bar-shaped mark -11 - 1261832 Ο) formed in the bar code area of the optical disc of the present invention is formed along the radial direction by a sufficient length (for example, about 1 mm), even in the case of reproducing the information of the barcode area, even In the case where the positional control of the beam in the radial direction is not strictly performed, the bar code information can be easily reproduced. That is, the information of the bar code area can be reproduced by the optical head through the optical head only by means of tracking, without the strict tracking control. Thus, the information relating to the reflectance of the first disc recorded in the bar code area is easily obtained in a short time, and the gain adjustment of the suitable reproduced signal can be quickly performed based on the information recorded in the bar code area and the reflectance of the optical disc. The result is that, in the barcode area, when the information of the control data area of the optical disc and the user data area are reproduced, the gain adjustment is not necessary corresponding to the type of the optical disc, and the information can be quickly reproduced. In addition, since the optimum amplification factor of the reproduced signal is obtained before the information in the reproduction control data area and the user data area is obtained, the information of the control data area and the user data area and the servo signal for tracking are in the type of the optical disc. In an unrelated situation, sufficient amplitude is available for more reliable information regeneration and tracking control. An advantage of the present invention is that a concentric circular or spiral-shaped guide groove is formed in the first region of the optical disk, and the guide groove is deflected in the radial direction of the optical disk, thereby recording address information. In the optical disc of the present invention, the user information is recorded at least in one of the interval between the guiding groove and the guiding groove, and preferably, the track pitch TP in the first area is used for recording and reproducing a light beam of information. Between the wavelength λ and the number of apertures of the concentrating lens (lens), it is preferable to satisfy the following -12 - (12) (12) 1261832

Ge-Te系材料的組分而不同，在記錄層的熔融後，産生再 次結晶時，可以認爲按照Bi，Ge，Te和上述化合物的熔 點順序，從較高的化合物起，從熔融區域外緣部，再次結 晶的化合物。將這些物質按照熔點降低順序排列如下。 G e :約 9 3 7 t；The composition of the Ge-Te-based material is different. When the recording layer is melted and recrystallized, it is considered that the melting order of Bi, Ge, Te and the above compound is from the higher compound and from the outside of the molten region. The edge, a compound that crystallizes again. These materials are arranged in the order of decreasing melting point as follows. G e : about 9 3 7 t;

G e 丁 e :約 7 2 5 cC B”Ge3Te6:約 6 5 0 °C Bi i2Te3 :約 590t Bi2GeTe4 : 5 8 4 °CG e 丁 e : about 7 2 5 cC B"Ge3Te6: about 6 50 °C Bi i2Te3 : about 590t Bi2GeTe4 : 5 8 4 °C

Bi2GeTe4:約 564 °C Te ：約 4 5 0 cC B i :約 2 7 1 cC 即，由於Ge的熔點最高，故認爲，在以Bi，Ge，Te 爲頂點的三角形組分圖的GeTe與Bl2Te3的連接線上，過 飽和地添加G e的B i - G e - T e系相變材料而形成的記錄層中 ，在記錄層的熔融區域（記錄標記）的外緣部，Ge容易 偏析。另外，在熔融區域的外緣部，Ge過飽和地存在， 由此，熔融區域的外緣部的結晶速度變慢，其結果是，抑 制從外緣部的再次結晶化，因此認爲，可抑制因多次改寫 而産生的再次結晶的“帶”的發生。另外，與上述現象存 在的同時，在軌道（記錄標記）中心附近，熔點更低的材 料容易偏析，由此，結晶化速度增加，即使在高速記錄時 ，仍可獲得良好的抹除性能。但是，如果過多地添加G e -15 - (13) 1261832 ，則結晶化速度降低，重要的是適當地添加G e。 另外，作爲記錄層的形成材料，從非晶質狀態的記錄 標記的保存壽命的觀點來看’重要的是不存在多個非晶質 狀態的相’並且，記錄層材料的結晶化溫度高，另外，非 晶質部分發生結晶時的活性化能量較大。本發明人發現， 以Bi . Ge和Te爲頂點的三角形組分圖的Ge5GTe5()附近的 組分滿足上述條件。人們認爲其一個原因在於像還在過去 實例中（比如，：IP特開昭62 -2 09 7 41號文獻）公開的那樣 ，G e. T e的結晶溫度較高’爲2 0 〇 °c ，伴隨組分不斷接近 B i 2 T e 3 $結晶溫度降低。 另外，本發明人根據驗證實驗而發現，在Ge5GTe5〇W 近，即使在長期保存後，非晶質狀態仍難於變化，能獲得 良好的抹除特性。但是，如果GeTe量過大，則結晶速度 降低，高速記錄不可能，如果Bi2 Te3量過多，結晶溫度降 低，由此’保存壽命惡化。於是知道，作爲記錄層材料， 最適合的組分爲在G e 5 〇 T e 5 〇中添加適量的B丨2 T e 3，並且採 用具有過多的Ge的區域的Bi-Ge-Te系材料。具體來說， 本發明人發現’記錄層可採用B i，G e，T e的組分比滿足 ((GeTe)x(Bi2Te3)】_x)】 — yGey(其中，0.3 x<l、〇<y 0.4)的組分的相變材料而形成。另外，按照與記錄層鄰接 的方式，設置含有 Bi2Te3，SnTe，PbTe等的核生成層， 由此，可進一步提高抑制再結晶的效果。另外，在本發明 的光碟中’如果記錄層材料保持上述組分範圍的關係，即 -16- (14) (14)1261832 使在混入雜質的情況下，如果雜質的原子％在]%以內，則 本發明的效果不消失。 此外，在本發明的光碟中，上述光碟具有含有有機色 素的記錄層，在第1區域和第2區域，最好設置有該記錄層 c 平發明的第2形式提供一種光碟的記錄再生裝置，在 沿該光碟的半徑方向延彳申的多個標記沿軌道方向排列的區 域。記錄有與該光碟的反射率有關的資訊，其特徵在於該 裝置包括光學頭，該光學頭對該光碟照射光束；信號處理 電路，該信號處理電路根據通過該光學頭檢測的再生信號 ，進行資訊再生；增益調整電路，該增益調整電路調整該 再生信號的放大率；判斷電路，該判斷電路根據與該光碟 的反射率有關的資訊，識別光碟的種類，上述增益調整電 路根據該判斷電路的判斷結果，調整該再生信號的放大率 〇 在本發明的記錄再生裝置中，與該光碟的反射率有關 的資訊最好爲表示第1區域的未記錄狀態的反射率與記錄 狀態的反射率之間的關係的資訊。 本發明的第3形式提供一種光碟的再生方法，在沿該 光碟的半徑方向延伸的多個標記沿軌道方向排列的區域， 記錄有與該光碟的反射率有關的資訊，該方法包括下述步 驟：對該區域，照射光束；根據來自該區域的反射光，再 生與該光碟的反射率有關的資訊；根據已再生的與該光碟 -17- (15) 1261832 的反射率有關的資訊，確定再生信號的放大率；按照已確 定的再生信號的放大率，對記錄於該區域以外的區域的資 訊進行再生。 在本發明的再生方法中，與該光碟的反射率有關的資 訊最好爲表示第]區域的未記錄狀態的反射率與記錄狀態 的反射率；Z間的關係的資訊。 本發明的第4髟式提烘一種光碟的製造方法，其特徵 在於該製造方法包括下述步驟：在該光碟中，設置記錄膜 ;對該光碟的規定區域的記錄膜照射光束，形成沿軌道方 向排列有沿半徑方向延伸的多個標記的標記組；該標記組 作爲與該光碟的反射率有關的資訊而形成。 在本發明的製造方法中，與上述光碟的反射率有關的 資訊最好爲表示上述光碟內的使用者資訊區域的未記錄區 域的反射率與記錄狀態的反射率之間的關係的資訊。 在本發明的製造方法中，上述記錄膜由相變材料形成 ，形成上述標記組的步驟最好包括根據上述使用者資訊區 域的未記錄狀態的反射率與記錄狀態的反射率之間的關係 ，調整上述光束的強度，由此，將表示上述使用者資訊區 域的未記錄狀態的反射率與記錄狀態的反射率之間的關係 的資訊作爲上述標記組，記錄於記錄膜中。 作爲對相變材料記錄方式的光碟的規定區域（條碼區 域）的記錄膜照射光束，形成沿半徑方向延伸的條碼狀的 標記組的方法，包括有在條碼區域的規定部分，對應於應 -18- (16) 1261832 記錄的資訊照射高功率的光束，蝕刻形成 膜的方法；在條碼區域上設置用相變材料 對應於資訊調節光束的強度，同時對記錄 條碼區域的記錄膜上形成結晶狀態和非晶 由此，記錄條碼狀的標記組的方法等。在 法Φ，特別最好是通過後者的方法，形成 ，下面對後者的方法進行進一步描述。 用相變材料形成的記錄膜通過噴鍍等 後的狀態處於非晶質狀態。於是，最好在 的狀態下，形成條碼狀的標記組的場合， 質狀態（記錄狀態），對於資訊僅僅使規 。該形成方法也可通過在對光碟的整個表 處理（也簡稱爲“初始化”）時所採用的 ，也可在對條碼區域以外的區域進行初始 在條碼區域，記錄條碼狀的標記組。 在本發明的條碼區域的形成方法中， 標記組時，對應於光碟的種類（HL盤， 光束的強度調節圖案爲相反圖案，由此， 關，形成相同極性的反射率圖案的資訊。 圖3表示相變材料記錄方式的光碟的 域的形成方法的一個實例。例如，圖3 ( c )所示的反射率圖案的資訊記錄於條碼 HL盤的雷射的強度調節圖案。在HL盤 於光碟上的記錄 形成的記錄膜5 膜照射光束，在 質狀態的區域， 本發明的製造方 條碼狀的標記絕 方式形成、形成 於形成記錄膜後 利用當時的非晶 定部分進行結晶 面進行初始結晶 裝置進行。另外 化處理，然後， 在形成條碼狀的 或LH盤），使 與光碟的種類無 本發明的條碼區 )表不將圖3 ( a 區域時，照射到 中，如圖3 ( c ) -19- (17) 1261832 所示的那樣，在像圖3 ( a )中的區域Η那樣，對計劃爲高 反射率的部分（未記錄狀態的部分），按照實現結晶的強 度（在圖3 ( c )中，爲6 0 0mW )照射光束，實現結晶，在 像圖3 ( a )中的區域L那樣，對計劃爲低反射率的部分（ 記錄區域的部分），不照射光束或照射較弱的強度（在圖 3 ( c :)中，爲]50mW )的光束，保持非晶質狀態。在HL 盤中，按照圖3 ( c )挢示的那樣的強度調節圖案，照射光 束，由此，可形成與圖3 ( a )所示的那樣的反射率圖案相 對應的條碼狀的標記組。 另一方面，圖3(b)表示在LH盤中，記錄圖3(a)所示 的那樣的反射率圖案的條碼資訊時所照射的光束的強度調 節圖案。在LH盤中，像圖3(b)所示的那樣，在像圖3(a) 中的區域Η那樣，對計劃爲高反射率的部分（記錄狀態的 部分），不照射光束或照射較弱的強度（在圖3 (b)中，爲 150m W)的光束，保持非晶質狀態，在像圖3(a)中的區域L 那樣，對計劃爲低反射率的部分（未記錄狀態的部分），用 實現結晶的強度（在圖3(b)，爲60 OmW)的光束來實現結晶 。在 LH盤中，按照圖3 (b)所示的那樣的強度調節圖案來 照射光束，由此，可形成與圖3 (a)所示的那樣的反射率圖 案相對應的條碼狀的標記組。 像根據圖3而知道的那樣，在由相變材料形成的記錄 膜上，形成條碼狀的標記組時，像圖3 (b)和（〇所示的那樣 ，在H L盤和LH盤中，使光束的強度調節的圖案爲相反 -20- (18) (18)1261832 的圖案，由此，HL盤，LH盤均可形成相同的反射率圖案 的資訊（圖3 (a))。如果再生通過這樣的方法而記錄資訊的 條碼區域的資訊，則 HL盤，LH盤均可按照相同的反射 率範圍內的値再生。於是，在再生條碼區域的資訊時，不 必對應於光碟的種類，進行增益調整等，可i央速地，以較 高的可靠性再生條碼區域的資訊。 另外，在本發明的製造方法中，上述記錄層含有有機 色素，形成上述標記組的步騾最好包括根據上述使用者資 訊區域的未記錄狀態的反射率與記錄狀態的反射率之間的 關係，調節上述光束的強度，由此，將表示上述使用者資 訊區域的未記錄狀態的反射率與記錄狀態的反射率之間的 關係的資訊作爲上述標記組，記錄於記錄膜中。 作爲對有機色素型的光碟的規定區域（條碼區域）的 記錄膜照射光束，形成沿半徑方向延伸的條碼狀的標記組 的方法，與相變材料記錄方式的光碟相同，有在條碼區域 的規定部分對應於應記錄的資訊，照射高功率的光束，蝕 刻形成於光碟上的記錄膜的方法；在條碼區域上設置含有 有機色素的記錄膜，對應於資訊調節光束的強度，同時對 記錄膜照射光束，在條碼區域的記錄膜上進行記錄，由此 ，記錄條碼狀的標記組的方法等。在本發明的製造方法中 ，在製造有機色素型的光碟的場合，特別是最好通過後者 的方法，形成條碼狀的標記組，下面對後者的方法進行進 一步描述。 -21 - (19) 1261832 含有有機色素的記錄膜通過旋塗（spin coat )等方式 形成，形成後的狀態與未記錄狀態相對應。於是，最好在 記錄膜形成後的狀態下的形成條碼狀的標記組的場合，對 應於資訊僅僅在規定部分進行記錄，形成記錄狀態。 在本發明的條碼區域的形成方法中，在形成條碼狀的 標記組時，通過對應於光碟的種類（HL盤，或LH盤） ，使光束的強度調節圖案爲相反的圖案，形成與光碟的種 類無關的相同極性的反射率圖案的資訊。 圖6表示本發明的有機色素型的光碟的條碼區域的形 成方法的一個實例。比如，圖6 (b )表示將圖6 ( a )所示的那 樣的反射率圖案的資訊記錄於條碼區域時的，照射到 H L 盤的雷射的強度調節圖案。在HL光碟中，在像圖6(b)中 的區域Η那樣，對計劃爲高反射率的部分（未記錄狀態的 部分）不照射光束，或照射在記錄膜中不産生變化的較弱 的強度（在圖6 (b )中，爲0 · 5 m W )的光束，以保持未記錄狀 態，在像圖6(a)中的區域L那樣，對計劃爲低反射率的部 分（記錄狀態的部分）照射實現記錄強度（在圖6(b)中，爲 1 OmW)的光束，變爲記錄狀態。在HL盤中，按照圖6(b) 所示的那樣的強度調節圖案照射光束，由此，可形成與圖 6 (a)所示的那樣的反射率圖案相對應的條碼狀的標記組。 另一方面，圖6(c)表示將圖6(a)所示的反射率圖案的 條碼記錄於LH盤時照射的光束的強度調節圖案。在LH 盤中，像圖6(c)所示的那樣，在像圖6(a)中的區域Η那樣 -22- (20) 1261832 ，對計劃爲高反射率的部分（記錄狀態的部分），照射實現 記錄的強度（在圖6(c)中，爲]0mW)的光束，使處於記錄狀 態，在像圖6(a)中的區域L那樣，對計劃爲低反射率的部 分（未記錄狀態的部分），不照射光束，或照射在記錄膜中 不產生變化的較弱的強度（在圖6(c)，爲0.5m M)的光束， 保持未記錄狀態。在盤Φ，以圖6(c)所示的鄧樣的強 度調節圖案照射光束，由此，可形成與圖6(a)所示的那樣 的反射率圖案相對應的條碼狀的標記組。 像根據圖6而知道的那樣，在含有有機色素的記錄膜 上，形成條碼狀的標記組時，像圖6(b)和圖6(c)所示的那 樣，在H L盤和L Η盤中，使光束的強度調節圖案爲相反 的圖案，由此，H L盤，L Η盤均可形成相同的反射率圖案 的資訊（圖6(a))。如果再生通過這樣的形成方法所記錄資 訊的條碼區域的資訊，則HL盤，LH盤均可按照基本相 同的反射率範圍內的値進行再生。於是，在再生條碼區域 的資訊·時，不必對應於光碟的種類，進行增益調整等，可 快速地，以較高的可靠性對條碼區域的資訊進行再生。 發明效果 按照本發明的光碟，由於在條碼區域記錄與光碟有關 的資訊，故容易在不進行嚴格的尋軌控制和增益調整的情 況下獲得這些資訊，由此，可快速地，進行適合的再生信 號的增益調整。於是，在檢測光碟的控制資料區域和使用 -23- (21) 1261832 者資料區域的資訊與尋軌用的伺服信號時，可在與光 種類無關的情況下，快速地再生，並且可按照足夠的 的再生信號進行檢測，可以更高的可靠性進行再生。 按照本發明的記錄再生裝置和再生方法，在不進 格的尋軌控制和增益調整的情況下，檢測記錄於光碟 碼區域中的光碟的反射率的資訊，根據該資訊，判斷 的種類，確定再生信號的適合的放大率。於是·在檢 碟的控制資料區域和使用者資料區域的資訊以及尋軌 伺服信號時，可在與光碟的種類無關的情沅下，快速 生，並且可按照足夠的振幅的再生信號進行檢測，由 可以更高的可靠性進行資訊再生。 另外，按照本發明的光碟的製造方法，在形成相 料形成的記錄層上形成條碼狀的標記時，或在含有有 素的記錄層上形成條碼狀的標記時，像圖3或圖6所示 樣，對應於光碟的種類，使光束的強度調節的圖案爲 的圖案，由此，H L盤，LH盤均可形成相同反射率圖 資訊。於是，在按照本發明的製造方法製作的光碟中 果再生條碼區域的資訊，則與光碟的種類（H L盤，| 盤）無關，可按照基本相同的反射率範圍內的値，再 訊。其結果是，可獲得下述的光碟，即在再生條碼區 資訊時，不必對應於光碟的種類，進行增益調整，可 地，以較高的可靠性，再生條碼區域的資訊。 碟的 振幅 行嚴 的條 、1/ 測光 用的 地再 此， 變材 機色 的那 相反 案的 ，如 C LH 生資 域的 快速 -24 - (22) 1261832 【實施方式】 實施例 下面對本發明的光碟及其記錄再生裝置的實施 描述，但是，本發明並不限於此。 第1實施例 (光碟的結構） 在第1實施例中，製作了作爲光碟的相變記錄 H L盤。圖1表示按照本實例製作的光綠的不葸性平 在本實例的光碟1 〇上，像圖1所示的那樣，從外周 設置有使周者資料區域A，控制資料區域Β和條碼 ，該使用者資料區域A用於記錄使用者資料’該 料區域B用於記錄光碟]0的物理格式資訊’該條碼 用於通過沿軌道排列有沿半徑方向延伸的多個標記 的條碼狀的標記組（也稱爲“條碼資訊”）記錄資丨 該使用者資料區域A設置於光碟1 0的半徑約在 5 8 . 5 m m的範圍內的區域，在該使用者資料區域A 旋狀，形成有軌道間距爲0.6 8 # m ’深度爲4 5 n m的 外，在使用者資料區域A ’通過使溝沿徑向偏向’ 括位址資訊的標題記錄部（圖中未示出）° 上述控制資料區域B設置於光碟1 〇的半徑約在 2 3.8mm的範圍內的區域，光碟1 〇的物理格式資訊 間距爲〇 . 6 8 m ’最短標記長度爲0.4 // m的1〜7調 例進行 方式的 面圖。 側依次 區域C 控制資 區域C 而形成 迅。 23 ·8 〜 ，呈螺 溝。另 形成包 2 J J 〜 由軌道 節的凹 -25- (23) (23)1261832 坑（Ρ )排形成。另外，在使用者資料區域A與控制資 料區域B之間，設置有約1 0 // m的連接（c ο η n e c ΐ i ο η )區 域（圖中未示出）。 上述條碼區域 C設置於光碟]0的半徑約在2 2.2〜 2 3 . 2 m m的範圍內的區域，在該條碼區域 C，不僅記錄有 媒體ID，版本（version )資訊等的光碟的識別資訊，而 且記錄有表示光碟]〇的使用者資料區域 A的未記錄狀態 的反射率與記錄狀態的反射率之間的關係的資訊。具體來 說：由於按照本實例製作的光碟1 〇爲HL盤，故在條碼區 域C的規定區域，記錄因記錄而使反射率下降的資訊。另 外，在該條碼區域C，也可記錄作爲與光碟的反射率有關 的資訊的，使用者資料區域 A的未記錄狀態的反射率和 記錄狀態的反射率的値。關於在條碼區域C的資訊的記錄 方法，將在後面進行描述。 (光碟的製造方法） 圖2表示按照本實例製作的光碟的示意性剖視圖。按 照本實例製作的光碟1 〇像圖2所示的那樣，具有下述的結 構，βΡ，在基板1上，依次疊置有保護層2、第1熱穩定層3 、記錄層4、第2熱穩定層5、中間層6、熱擴散層7、UV樹 脂層8和透明基板9。另外，在該實例中，在光碟1 0的使用 者資料區域A、控制資料區域Β和條碼區域C上，形成 上述各層。下面對本實例的光碟的製作方法進行描述。 -26- (24) 1261832 首先，採用母盤（s t a m p e r )，通過注射成形，製作 聚碳酸酯（Poly— Carbonaie)制的，直徑爲120mm，厚度 爲0.6的基板]。此時，在使用者資料區域A，形成軌道間 距爲〇 . 6 8 // m，深度爲4 5 n m的螺旋狀的溝，在控制資料區 域B，形成軌道間距爲0 · 6 S " m，最短標記長度爲〇 .4 // m 的凹坑排。 接著，在該基板]上，通過噴鍍方式，按照5 8nm的膜 厚，形成作爲保護層2的（ZnS)S()(Si〇2)2D。接著，在該保 _層2上，通過噴鍍方式5按照1 n m的膜厚’形成作爲第1 熱穩定層3的，Ge8Cl·2 —N(相對比表示）。另外’在第】熱 穩定層3上，通過噴鍍方式，按照1 3 nm的膜厚，形成作爲 記錄層4的BuGe^Te^。然後，在記錄層4上，通過噴鍍 方式，按照1 n m的膜厚，形成作爲第2熱穩定層5的， G e 8 C r 2 - N (相對比表示）。接著，在該第2熱穩定層5上，通 過噴鍍方式，按照4 8 n m的膜厚，形成作爲中間層6的 (ZnS)5G(Si02)5G。然後，在該中間層6上，通過噴鍍方式 ，按照1 50nm的膜厚，形成作爲熱擴散層7的。 之後，在熱擴散層7上，塗敷作爲U V樹脂層8的紫外 線硬化樹脂，在其上，再放置厚度爲0.6 m m的聚碳酸醋（ ρ ο 1 y - c a r b 〇 ]] a t e )制的透明基板9。然後，透過該透明基板 9，照射紫外線，使紫外線硬化樹脂硬化，由此，將透明 基板9粘貼於UV樹脂層8上。通過以上的製造方法，獲得 圖2所示的相變記錄方式的光碟]〇。 -27- (25) (25)1261832 另外，在按照本實例製作的光碟]〇中’未記錄狀態' ( 結晶狀態）的部分的反射率爲]8 %，記錄狀態（非晶質狀態） 的部分，即，記錄標記部的反射率爲5 %。 (條碼區域C的形成方法） 在按照本實例製作的光碟]0中，像上述那樣，在光碟 的半徑約在2 2 . 2〜2 3 . 2 m m的範圍內的，寬度爲】ni m的區 域，形成條碼區域C。形成於該條碼區域C內的條碼狀的 標記組採周初始處理器（圖中未示出），像下述這樣構成 。但是，在本實例中，在對光碟全面進行初始（結晶化） 處理之前，在該條碼區域C的內部，形成條碼狀的標記組 。另外，也可在僅僅對使用者資料區域 A和控制資料區 域B進行初始處理後，在上述條碼區域C中，記錄條碼 狀的標記組。 在初始處理器的內部，安裝按照本實例製作的光碟， 按照24〇Orpm的轉速使光碟旋轉，對光碟照射波長爲 8 1 Onm的雷射。此時，雷射的光點（sp〇t )按照形成光碟 的半徑方向的長度約爲5 〇从m、軌道方向的長度（寬度） 約爲1 // m的形狀的方式聚焦，對應於記錄於該條碼區域 C中的資訊’對條碼區域^上的規定位置，照射雷射。但 是’照射到光碟上的雷射的功率在6〇0〜150mW之間調節 〇 圖3表不在條碼區域C，形成條碼狀的標記組時的， -28- (26) 1261832 雷射的強度調節的圖案。在圖3中，圖3 ( b )和圖3 ( c ) 表示記錄圖3 ( a )所示的反射率圖案的條碼資訊時的雷射 的強度調節的狀態。圖3 ( b )爲表示LH盤的雷射的強度 調節圖案的圖，圖3 ( c )爲表示H L盤的雷射的強度調節 圖案的圖。按照本實倜製作的光碟爲HL盤，所以進行如 圖3 ( c )所示的雷射的強度調節，記錄條碼資訊。另外： 在於條 S域C中，記錄資訊之前，處於光碟的記錄層全 面處於噴鍍後的狀態，即，非晶質狀態。於是，在本實例 中；照射了較局的雷射功率（6 0 0 i、4 w )的區域受到加熱變 爲結晶狀態，通過該部分的反射率變化記錄條碼資訊。 在HL盤中，像圖3(c)所示的那樣，在像圖3(a)中的 區域 Η那樣，對計劃形成較高的反射率的部分，照射實 現結晶那樣的強度（在圖3(c)中，爲6 0 0Mw)的光束，實現 結晶，在像圖3 ( a)中的區域L那樣，對計劃形成低反射率 的部分（記錄狀態的部分），照射較弱的強度（在圖3(c)中， 爲1 5 0 m W )的光束，保持非晶質狀態。通過像這樣調節光 束強度，形成與圖3(a)所示的與反射率圖案相對應的條碼 狀的標記組。 接著，在使雷射光點（spot )的縱向與光碟的半徑基 本一致的同時，每當光碟旋轉1圈，將雷射光點（spot ) 移向半徑方向的外側。此時，每圈的雷射光點（spot )的 移動量爲3 6 m。另外，像圖1中的條碼區域C所示的那 樣，使形成條碼狀的標記組的各記錄標記相對於光碟中心 -29- (27) 1261832 呈同幅發射狀，使光碟每旋轉1周，雷射的光調節的圖案 (雷射光照射的時刻）與應記錄的資訊同步。在本實例中 ，使光碟約旋轉3 0圈，半徑方向的長度約爲1 m m，沿軌道 方向，排列有多軌道方向的寬度約爲】V ηι的記錄標Ϊ5己’ 形成圖1所示的那樣的，條碼區域C的條碼狀的標記組。 第2實施例 在第2實施例中，製作了作爲光碟的相變記錄方式的 LH盤。按照本實例中製作的光碟的示意性平面圖與圖]相 同，在條碼區域 C，不僅記錄有媒體ID，版本（v e r s i 〇 η )資訊等的光碟的識別資訊，而且記錄有表示光碟的使周 者資料區域 A的未記錄狀態的反射率與記錄狀態的反射 率之間的關係的資訊。具體來說，由於按照本實例製作的 光碟爲L. Η盤，故在條碼區域C的規定區域，記錄因記錄 反射率上升的資訊。另外，在該條碼區域C，也可記錄作 爲與光碟的反射率有關的資訊的，使用者資料區域 Α的 未記錄狀態的反射率和記錄狀態的反射率的値。關於在條 碼區域C的資訊的記錄方法，將在後面進行描述。 (光碟的製造方法） 圖4表示按照本實施例製作的光碟的示意性剖視圖。 按照本實例製作的光碟2 0像圖4所示的那樣，具有下述的 結構，即，在基板]上，依次疊置有第1保護層2 1、第2保 -30- (28) 1261832 護層2 2、第3保護層2 3、第1熱穩定層3、記錄層4 '第2熱 穩定層5、中間層6、熱擴散層7、U V樹脂層8和透明基板9 。另外，在該奮施例中，在光碟2 0的使用者貧料區域A、 控制資料區域B和條碼區域C上形成上述各層。下面對 本實施例的光碟的製作方法進行描述。但是，基板1按照 與第1實施例相同的方式製作。 首先，在該基板]上’通過噴鍍方式按照5 Gnm的膜厚 ，形成作爲第i保護層21的（ZnS)8G(Si02)2(}。接著，在該 第Η呆護層2丨上，通過噴鍍方式，按照4 Q n m的膜厚，形成 作爲第2保護層22的 Al2〇3。接著，在第2保護層22上，通 過噴鍍方式，按照20nm的膜厚，形成第3保護層23的 (ZnS)8c(Si〇2)2Q。即，在本實施例的光碟中，保護層爲3 層結構。在本實施例中，由於保護層爲3層結構，故利用 各層之間的千涉效果，降低與未記錄狀態相對應的結晶狀 態的區域的反射率，提高與記錄狀態相對應的非晶質狀態 的區域的反射率。 接著，在第3保護層2 3上，通過噴鍍方式，按照2nm 的膜厚，形成第1熱穩定層3的Ge8Cr2-N (相對比表示）。然 後，在第1熱穩定層3上，通過噴鍍方式，按照]〇nm的膜 厚，形成作爲記錄層4的 B i3 G e 4 7 T e 5。。然後，在記錄層斗 上’通過噴鑛方式’按照2nm的膜厚’形成作爲第2熱穩 定層5的GesC^N(相對比表示）。接著，在該第2熱穩定層 5上，通過噴鍍方式，按照35nm的膜厚，形成作爲中間層 -31 - (29) 1261832 6的（Z n S ) 5 〇 ( S i〇2) 5 〇。然後，在該中間層6上，通過噴鍍方 式，按照]50nm的膜厚，形成作爲熱擴散層7的ΑΙμΤμ。 之後，在熱擴散層7上，塗敷作爲UV樹脂層8的紫外 線硬化樹脂，在其上再放置厚度爲〇.6mn的聚碳酸酯（ pdy-carbonaie )制的透明基板9。然後，透過透明基板9 照射紫外線5使紫外線硬化樹脂硬化，S此5將透明基板 9粘貼於UV樹脂層8上。通過以上的製造方法，獲得圖^ 戶斤示的相變記錄方式的光碟2 0。 另外，在按照本實施例製作的光碟2 0中，未記錄狀態 (結晶狀態）的部分的反射率爲5 %，記錄狀態（非晶質狀態） 的部分，即，記錄標記部的反射率爲I 6%。 (條碼區域C的形成方法） 在按照本實施例製作的光碟中，除了改變在條碼區域 C形成條形狀碼標記組時的雷射的強度調節的圖案以外， 按照與第1實施例相同的方式，形成條碼區域C。下面對 按照本實施例製作的光碟的條碼區域C的形成方法進行描 述。 同樣在本實例中，與第1實施例相同，考慮記錄圖3 ( a )所示的那樣的反射率圖案的條碼資訊時的雷射的強度 調節。按照本實施例製作的光碟爲LH盤。進行像圖3 ( b )所示的那樣的雷射的強度調節，記錄條碼資訊。另外， 於條碼區域C，在記錄資訊之前，光碟的記錄層的整個表 -32- (30) 1261832 面處於噴鍍之後的狀態，即，非晶質狀態。於是，在本實 施例中，照射了較高的雷射功率（6 0 0 mW )的區域受到加 熱，變爲結晶狀態，該部分的反射率變化，由此，記錄資 訊。 在L Η盤中，像圖3 (b )所示的那樣，在像圖3 ( a)中的 區域Η那樣，對計劃爲較高的反射率的部分（記錄狀態的 部分）照射較弱的強度（在圖3 ( b )中，爲]50m W)的雷射 ，保持非晶質狀態，在像圖3 (a)中的區域L那樣，對計劃 爲較低的反射率的部分（未記錄狀態的部分），照射可實現 結晶的強度（在圖3 ( b )中，爲6 0 0 m W)的雷射，實現結晶。 通過像這樣調節雷射強度，同樣在LH盤與HL盤相同， 形成與像圖3 (a)所示的那樣的反射率圖案相對應的條碼狀 的標記組。 像根據圖3而知道的那樣，在光碟像本實施例那樣爲 LH盤的場合，使該雷射的強度調節圖案（圖3(b))，爲與 HL盤（第1實施例）的雷射的強度調節圖案（圖3(c))相反的 圖案，由此，可形成相同反射率圖案的資訊（圖3(a))。如 果通過這樣的方法再生記錄資訊的條碼區域的資訊，則與 光碟的種類（HL盤或LH盤）無關，可按照相同的反射率範 圍內的値再生資訊。於是，在再生條碼區域C的資訊時， 不必對應於光碟的種類進行增益調整等，可快速地，並且 以較高的可靠性，再生條碼區域C的資訊。 -33- (31) 1261832 第3實施例 (光碟的結構） _第丨實施例中，製作了作爲光碟的，含有有機色素 ^ M HL盤。按照本實施例中製作的光碟的示意性平 霍己錄腠的 "$ 圖]和圖2相同，像圖]所示的那樣，從外周側依次 面_與ΗBi2GeTe4: about 564 °C Te: about 4 50 0 cC B i : about 2 7 1 cC That is, since the melting point of Ge is the highest, it is considered that the GeTe of the triangular composition diagram with the apex of Bi, Ge, Te In the recording layer formed by adding the Bi-G e -T e phase change material of G e to the connection line of Bl2Te3, Ge is likely to segregate in the outer edge portion of the molten region (recording mark) of the recording layer. In addition, in the outer edge portion of the molten region, Ge is excessively saturated, whereby the crystallization rate of the outer edge portion of the molten region is slowed, and as a result, recrystallization from the outer edge portion is suppressed, and therefore, it is considered that suppression can be suppressed. The occurrence of a re-crystallized "band" due to repeated rewriting. Further, in addition to the above phenomenon, in the vicinity of the center of the track (recording mark), the material having a lower melting point is liable to be segregated, whereby the crystallization rate is increased, and good erasing performance can be obtained even at high speed recording. However, if G e -15 - (13) 1261832 is excessively added, the crystallization speed is lowered, and it is important to appropriately add G e . In addition, as a material for forming the recording layer, from the viewpoint of the storage life of the recording mark in the amorphous state, it is important that the phase of the plurality of amorphous states does not exist and the crystallization temperature of the recording layer material is high. Further, the activation energy at the time of crystallization of the amorphous portion is large. The inventors have found that the composition in the vicinity of Ge5GTe5() of the triangular composition diagram having the apex of Bi.Ge and Te satisfies the above conditions. One of the reasons is believed to be that, as disclosed in the past examples (for example, document: JP-A-62-209 7 41), the crystallization temperature of G e. T e is higher '20 〇 ° c, the accompanying component is constantly approaching B i 2 T e 3 $ crystallization temperature is lowered. Further, according to the verification experiment, the inventors found that in the Ge5GTe5〇W, the amorphous state is hard to change even after long-term storage, and good erasing characteristics can be obtained. However, if the amount of GeTe is too large, the crystallization rate is lowered, and high-speed recording is impossible. If the amount of Bi2 Te3 is too large, the crystallization temperature is lowered, whereby the 'preservation life is deteriorated. Thus, as a recording layer material, the most suitable component is a Bi-Ge-Te-based material in which an appropriate amount of B丨2 T e 3 is added to G e 5 〇T e 5 ,, and a region having too much Ge is used. . Specifically, the inventors have found that 'the recording layer can adopt the composition ratio of B i, G e, T e to satisfy ((GeTe)x(Bi2Te3)]_x)] - yGey (where 0.3 x < l, 〇 <; y 0.4) The phase change material of the component is formed. Further, by providing a nucleation layer containing Bi2Te3, SnTe, PbTe or the like so as to be adjacent to the recording layer, the effect of suppressing recrystallization can be further enhanced. Further, in the optical disk of the present invention, 'if the recording layer material maintains the relationship of the above composition range, that is, -16-(14)(14)1261832, if the impurity is mixed, if the atomic % of the impurity is within Then the effect of the present invention does not disappear. Further, in the optical disk of the present invention, the optical disk has a recording layer containing an organic dye, and the recording layer c is preferably provided in the first region and the second region. The second aspect of the invention provides a recording and reproducing device for an optical disk. An area in which a plurality of marks extending in the radial direction of the optical disk are arranged in the track direction. Recording information relating to the reflectivity of the optical disc, characterized in that the apparatus comprises an optical head that illuminates the optical disc with a light beam; and a signal processing circuit that performs information based on the reproduced signal detected by the optical head a gain adjustment circuit that adjusts a magnification of the reproduced signal; a determination circuit that identifies a type of the optical disc based on information relating to a reflectance of the optical disc, the gain adjustment circuit being judged according to the determination circuit As a result, the amplification factor of the reproduced signal is adjusted. In the recording and reproducing apparatus of the present invention, the information relating to the reflectance of the optical disk is preferably between the reflectance indicating the unrecorded state of the first region and the reflectance of the recorded state. Information about the relationship. According to a third aspect of the present invention, there is provided a method of reproducing a optical disk, wherein information relating to a reflectance of the optical disk is recorded in a region in which a plurality of marks extending in a radial direction of the optical disk are arranged in a track direction, the method comprising the following steps : illuminating the light beam for the region; reproducing information relating to the reflectance of the optical disk based on the reflected light from the region; determining regeneration based on the information about the reflectance of the optical disk -17-(15) 1261832 The amplification factor of the signal; the information recorded in the area outside the area is reproduced in accordance with the determined amplification factor of the reproduced signal. In the reproducing method of the present invention, the information relating to the reflectance of the optical disk is preferably information indicating the relationship between the reflectance of the unrecorded state of the first region and the reflectance of the recorded state; and Z. A fourth aspect of the invention provides a method of manufacturing an optical disk, characterized in that the manufacturing method comprises the steps of: providing a recording film in the optical disk; irradiating the recording film of the predetermined area of the optical disk with a light beam to form an orbit along the track The mark groups of the plurality of marks extending in the radial direction are arranged in the direction; the mark sets are formed as information relating to the reflectance of the optical disk. In the manufacturing method of the present invention, the information relating to the reflectance of the optical disk is preferably information indicating a relationship between the reflectance of the unrecorded area of the user information area in the optical disk and the reflectance of the recorded state. In the manufacturing method of the present invention, the recording film is formed of a phase change material, and the step of forming the mark group preferably includes a relationship between a reflectance of an unrecorded state of the user information region and a reflectance of the recording state. The intensity of the light beam is adjusted, whereby information indicating the relationship between the reflectance of the unrecorded state of the user information area and the reflectance of the recording state is recorded in the recording film as the mark group. A method of irradiating a light beam to a recording film of a predetermined region (barcode region) of a disc of a phase change material recording method to form a strip-shaped mark group extending in a radial direction, including a predetermined portion in a barcode region, corresponding to -18 - (16) 1261832 The recorded information illuminates the high-power beam and etches the film to form a film; the phase change material is used to adjust the intensity of the beam corresponding to the information on the bar code region, and the crystal state is formed on the recording film of the recorded bar code region and Amorphous thus, a method of recording a barcode-like mark group or the like. The method Φ, particularly preferably formed by the latter method, is further described below. The recording film formed of the phase change material is in an amorphous state after being sprayed or the like. Therefore, in the case where a bar-shaped mark group is formed in a state where it is preferable, the quality state (recording state) is only used for information. The formation method can also be carried out by using the entire table processing (also simply referred to as "initialization") of the optical disc, or by performing an initial bar code area on the area other than the barcode area, and recording the barcode-shaped mark group. In the method of forming a barcode region of the present invention, when marking a group, corresponding to the type of the optical disk (the HL disk, the intensity adjustment pattern of the light beam is an opposite pattern, thereby closing, forming information of the reflectance pattern of the same polarity. An example of a method of forming a domain of a disc in which a phase change material is recorded. For example, the information of the reflectance pattern shown in FIG. 3(c) is recorded on the intensity adjustment pattern of the laser of the barcode HL disc. In the recording state of the recording film 5 formed by the recording, the film is irradiated with a light beam, and in the region of the state of the material, the mark of the present invention is formed in a pattern, and the film is formed in the amorphous film by the amorphous portion at the time for initial crystallization. The device is carried out. Additional processing, and then, in the formation of a bar code-like or LH disk, so that the type of the optical disk does not have the bar code area of the present invention) is shown in Figure 3 (a area, when illuminated, as shown in Figure 3 (c -19- (17) 1261832, as in the area Η in Fig. 3 (a), the part that is planned to have high reflectance (the part of the unrecorded state) is crystallized. The intensity (in Fig. 3 (c), 650 mW) illuminates the light beam to effect crystallization. In the region L like the one in Fig. 3 (a), the portion (the portion of the recording area) that is planned to have low reflectance is not The beam of the illuminating beam or the weaker intensity (50 mW in Fig. 3 (c:)) is kept in an amorphous state. In the HL disk, the intensity adjustment pattern is as shown in Fig. 3 (c) The light beam is irradiated, whereby a bar-shaped mark group corresponding to the reflectance pattern as shown in Fig. 3(a) can be formed. On the other hand, Fig. 3(b) shows that in the LH disk, FIG. 3 is recorded. The intensity adjustment pattern of the light beam irradiated when the bar code information of the reflectance pattern is shown in (a). In the LH disk, as shown in Fig. 3(b), in the area like Fig. 3(a) In the case of the portion (recording state) that is planned to have high reflectance, the light beam that does not illuminate the light beam or emits a weak intensity (150 mW in Fig. 3(b)) remains amorphous. As for the region L in Fig. 3(a), the portion that is planned to have low reflectance (the portion in the unrecorded state) is used to achieve the intensity of crystallization ( In Fig. 3(b), a beam of 60 OmW is used to effect crystallization. In the LH disk, the light beam is irradiated in accordance with the intensity adjustment pattern as shown in Fig. 3(b), whereby it can be formed with Fig. 3 (a). a bar code-like mark group corresponding to the reflectance pattern as shown. As is known from FIG. 3, when a bar-shaped mark group is formed on a recording film formed of a phase change material, like FIG. 3 ( b) and (as shown in 〇, in the HL disk and the LH disk, the pattern for adjusting the intensity of the light beam is the opposite -20-(18) (18) 1261832 pattern, whereby the HL disk, the LH disk can be Information that forms the same reflectance pattern (Fig. 3(a)). If the information of the bar code area of the information is recorded by such a method, the HL disk and the LH disk can be reproduced in the same reflectance range. Therefore, when the information in the barcode area is reproduced, it is not necessary to perform the gain adjustment or the like in accordance with the type of the optical disk, and the information of the barcode area can be reproduced with high reliability. Further, in the manufacturing method of the present invention, the recording layer contains an organic dye, and the step of forming the label group preferably includes a relationship between a reflectance according to an unrecorded state of the user information region and a reflectance of a recording state. The intensity of the light beam is adjusted, whereby information indicating the relationship between the reflectance of the unrecorded state of the user information area and the reflectance of the recording state is recorded as the mark group in the recording film. A method of irradiating a light beam on a recording film of a predetermined region (barcode region) of an organic dye type optical disk to form a bar-shaped mark group extending in the radial direction is the same as that of a phase change material recording type optical disk, and has a specification in a barcode region. a method corresponding to the information to be recorded, irradiating a high-power beam, and etching a recording film formed on the optical disc; and providing a recording film containing an organic pigment on the barcode area, adjusting the intensity of the light beam corresponding to the information, and simultaneously irradiating the recording film The light beam is recorded on the recording film of the barcode area, thereby recording a barcode-shaped mark group or the like. In the production method of the present invention, in the case of producing an organic dye type optical disk, it is particularly preferable to form a barcode-shaped mark group by the latter method, and the latter method will be further described below. -21 - (19) 1261832 A recording film containing an organic dye is formed by spin coating or the like, and the formed state corresponds to an unrecorded state. Therefore, in the case where a bar-shaped mark group is formed in a state in which the recording film is formed, it is preferable to record only the predetermined portion in accordance with the information to form a recording state. In the method of forming a barcode region of the present invention, when the barcode-shaped marker group is formed, the intensity adjustment pattern of the light beam is reversed by the type corresponding to the optical disk (HL disk, or LH disk), and the optical disk is formed. Information about the type of reflectance pattern of the same polarity. Fig. 6 shows an example of a method of forming a barcode region of an organic dye type optical disk of the present invention. For example, Fig. 6(b) shows the intensity adjustment pattern of the laser that is irradiated onto the HL disk when the information of the reflectance pattern as shown in Fig. 6(a) is recorded in the bar code region. In the HL disc, in the region like the area Η in Fig. 6(b), the portion which is planned to have high reflectance (the portion in the unrecorded state) is not irradiated with a light beam, or is irradiated in the recording film to be weakly changed. The intensity (in Fig. 6 (b), 0 · 5 m W ) of the light beam, to maintain the unrecorded state, in the region L like the region L in Fig. 6 (a), the portion planned to be low reflectance (recording state) The light beam that achieves the recording intensity (1 OmW in FIG. 6(b)) is changed to the recording state. In the HL disk, the light beam is irradiated in accordance with the intensity adjustment pattern as shown in Fig. 6(b), whereby a bar-shaped mark group corresponding to the reflectance pattern as shown in Fig. 6(a) can be formed. On the other hand, Fig. 6(c) shows the intensity adjustment pattern of the light beam irradiated when the bar code of the reflectance pattern shown in Fig. 6(a) is recorded on the LH disk. In the LH disk, as shown in Fig. 6(c), in the region like 图-(20) 1261832 in Fig. 6(a), the portion planned to be highly reflective (the portion of the recording state) The light beam that achieves the intensity of the recording (in FIG. 6(c), is 0 mW) is placed in the recording state, and the portion planned to be low in reflectance is in the region L like the one in FIG. 6(a) (not The portion of the recording state), the light beam that does not illuminate the light beam or the weak intensity (0.5 mM in Fig. 6(c)) that does not change in the recording film, remains unrecorded. In the disk Φ, the light beam is irradiated with the Deng-like intensity adjustment pattern shown in Fig. 6(c), whereby a bar-shaped mark group corresponding to the reflectance pattern as shown in Fig. 6(a) can be formed. As is known from Fig. 6, when a barcode-shaped mark group is formed on a recording film containing an organic dye, as shown in Fig. 6 (b) and Fig. 6 (c), the HL disk and the L disk are as shown in Fig. 6 (b) and Fig. 6 (c). In the case, the intensity adjustment pattern of the light beam is reversed, whereby the HL disk and the L disk can form the same information of the reflectance pattern (FIG. 6(a)). If the information of the bar code area recorded by such a forming method is reproduced, the HL disk and the LH disk can be reproduced in accordance with 基本 within substantially the same reflectance range. Therefore, when the information of the bar code area is reproduced, it is not necessary to perform gain adjustment or the like in accordance with the type of the optical disk, and the information of the bar code area can be quickly reproduced with high reliability. Advantageous Effects of Invention According to the optical disc of the present invention, since information relating to the optical disc is recorded in the barcode area, it is easy to obtain such information without performing strict tracking control and gain adjustment, whereby the suitable reproduction can be performed quickly. Gain adjustment of the signal. Therefore, when detecting the control data area of the optical disc and using the information of the -23-(21) 1261832 data area and the servo signal for tracking, it can be quickly regenerated regardless of the type of light, and can be sufficiently The regenerative signal is detected and can be reproduced with higher reliability. According to the recording and reproducing apparatus and the reproducing method of the present invention, in the case of the tracking control and the gain adjustment which are not subjected to the grid, the information of the reflectance of the optical disc recorded in the optical disc code area is detected, and the type of the judgment is determined based on the information. A suitable magnification of the reproduced signal. Therefore, when the information of the control data area and the user data area of the disc and the tracking data signal are tracked, the sound can be quickly generated regardless of the type of the optical disc, and the detection signal can be detected according to a sufficient amplitude. Information regeneration can be performed with higher reliability. Further, according to the method for manufacturing an optical disk of the present invention, when a bar-shaped mark is formed on a recording layer formed by forming a phase material, or a bar-shaped mark is formed on a recording layer containing a prime, as shown in Fig. 3 or Fig. 6 In the sample, the pattern in which the intensity of the light beam is adjusted is a pattern corresponding to the type of the optical disk, whereby the HL disk and the LH disk can form the same reflectance map information. Therefore, in the optical disk produced by the manufacturing method of the present invention, the information of the reproduced bar code area is re-renewed according to the type of the optical disk (H L disk, | disk) regardless of the range of the same reflectance. As a result, the following optical disc can be obtained, that is, when the bar code area information is reproduced, the gain adjustment is not necessary in accordance with the type of the optical disc, and the information of the barcode area can be reproduced with high reliability. The amplitude of the disc is strict, the ground for 1/metering, and the opposite of the color of the machine, such as the speed of the C LH production area - 24 - (22) 1261832 [Embodiment] Description of the invention of the optical disc and its recording and reproducing apparatus, however, the present invention is not limited thereto. (First Embodiment) (Structure of Optical Disc) In the first embodiment, a phase change recording HL disc as a compact disc was produced. 1 shows that the light greenness produced according to the present example is flat on the optical disk 1 of the present example, and as shown in FIG. 1, the peripheral data area A, the control data area, and the bar code are provided from the outer periphery. The user profile area A is used to record the user profile 'the physical format information of the material zone B for recording the disc|0'. The barcode is used for the bar code-like mark by which a plurality of marks extending in the radial direction are arranged along the track. The group (also referred to as "barcode information") records the area in which the user data area A is set in the range of the optical disk 10 with a radius of about 58.5 mm, and is rotated in the user data area A to form In the case where the track pitch is 0.6 8 # m 'the depth is 45 nm, in the user data area A', the groove is radially deflected to the title recording portion of the address information (not shown). The area B is set in the area where the radius of the disc 1 约 is about 2 3.8 mm, and the physical format information interval of the disc 1 〇 is 〇. 6 8 m 'the shortest mark length is 0.4 // m 1 to 7 The face of the way. The side sequence C controls the area C and forms a fast. 23 ·8 ~ , is a thread. Another form of the package 2 J J ~ is formed by the concave -25- (23) (23) 1261832 pit (Ρ) row of the track section. Further, between the user profile area A and the control material area B, a connection (c ο η n e c ΐ i ο η ) area of about 10 // m is provided (not shown). The barcode area C is set in an area in which the radius of the optical disk [0] is about 2 2.2 to 2 3 . 2 mm, and in the barcode area C, not only the identification information of the optical disc, the version information, and the like is recorded. Further, information indicating the relationship between the reflectance of the unrecorded state of the user data area A of the optical disk and the reflectance of the recorded state is recorded. Specifically, since the optical disk 1 制作 produced according to the present example is an HL disk, information indicating that the reflectance is lowered due to recording is recorded in a predetermined area of the barcode area C. Further, in the barcode area C, it is also possible to record the reflectance of the unrecorded state of the user data area A and the reflectance of the recording state as information relating to the reflectance of the optical disc. The recording method of the information in the barcode area C will be described later. (Manufacturing Method of Optical Disc) Fig. 2 is a schematic cross-sectional view showing a compact disc produced in accordance with the present example. The optical disc 1 produced in accordance with the present example has the following structure as shown in FIG. 2, and has a protective layer 2, a first thermal stabilization layer 3, a recording layer 4, and a second layer on the substrate 1 in this order. The heat stabilizing layer 5, the intermediate layer 6, the heat diffusion layer 7, the UV resin layer 8, and the transparent substrate 9. Further, in this example, the above layers are formed on the user profile area A, the control material area Β, and the barcode area C of the optical disc 10. The method of fabricating the optical disc of this example will be described below. -26- (24) 1261832 First, a mother substrate (s t a m p e r ) was used to produce a polycarbonate (poly-carbonaie) substrate having a diameter of 120 mm and a thickness of 0.6 by injection molding. At this time, in the user data area A, a spiral groove having a track pitch of 〇. 6 8 // m and a depth of 4 5 nm is formed, and in the control data area B, a track pitch is formed to be 0 · 6 S " m The shortest mark length is 〇.4 // m. Next, on the substrate, (ZnS)S()(Si〇2)2D as the protective layer 2 was formed by a sputtering method in accordance with a film thickness of 58 nm. Next, on the protective layer 2, Ge8Cl·2-N (represented by the relative ratio) which is the first heat-stable layer 3 is formed by the thermal spraying method 5 in a film thickness of 1 n m. Further, on the first heat-stable layer 3, BuGe^Te^ as the recording layer 4 was formed by a sputtering method in accordance with a film thickness of 13 nm. Then, on the recording layer 4, G e 8 C r 2 - N (represented by the relative ratio) as the second heat-stable layer 5 was formed by a thermal spraying method in a film thickness of 1 n m. Next, on the second heat-stable layer 5, (ZnS)5G(SiO2)5G as the intermediate layer 6 was formed by a thermal spraying method in accordance with a film thickness of 4 8 n m. Then, on the intermediate layer 6, a thermal diffusion layer 7 was formed by a sputtering method in accordance with a film thickness of 150 nm. Thereafter, an ultraviolet curable resin as the UV resin layer 8 is applied onto the thermal diffusion layer 7, and a transparent polycarbonate (ρ ο 1 y - carb 〇 ] ] ate ) having a thickness of 0.6 mm is placed thereon. Substrate 9. Then, the transparent substrate 9 is irradiated with ultraviolet rays to cure the ultraviolet curable resin, whereby the transparent substrate 9 is adhered to the UV resin layer 8. According to the above manufacturing method, the optical disk of the phase change recording method shown in Fig. 2 is obtained. -27- (25) (25) 1261832 In addition, the reflectance of the portion of the "unrecorded state" (crystalline state) in the disc manufactured in this example is 88%, and the recording state (amorphous state) The portion, that is, the reflectance of the recording mark portion is 5%. (Method of Forming Bar Code Area C) In the optical disk manufactured by the present example, as described above, the width of the optical disk is about 2 2 . 2 to 2 3 . 2 mm, and the width is μ m The area forms a barcode area C. The bar code-like mark group formed in the bar code area C is formed by a weekly initial processor (not shown), and is constructed as follows. However, in the present example, a bar coded mark group is formed inside the bar code area C before the optical disk is subjected to the initial (crystallization) process. Alternatively, after the initial processing is performed only on the user data area A and the control data area B, a barcode-shaped mark group may be recorded in the above-described barcode area C. Inside the initial processor, an optical disc manufactured in accordance with this example is mounted, and the optical disc is rotated at a speed of 24 〇 Orpm to irradiate the optical disc with a laser having a wavelength of 8 1 Onm. At this time, the spot (sp〇t) of the laser is focused in such a manner that the length in the radial direction of the optical disk is about 5 〇, and the length (width) in the track direction is about 1 // m, corresponding to the recording. The information in the bar code area C is irradiated to the laser at a predetermined position on the bar code area. However, the power of the laser irradiated onto the optical disk is adjusted between 6 〇 0 and 150 mW. When the table 3 is not in the bar code area C and the bar coded mark group is formed, the intensity adjustment of the -28-(26) 1261832 laser is performed. picture of. In Fig. 3, Fig. 3 (b) and Fig. 3 (c) show the state of the intensity adjustment of the laser when the bar code information of the reflectance pattern shown in Fig. 3 (a) is recorded. Fig. 3 (b) is a view showing the intensity adjustment pattern of the laser of the LH disk, and Fig. 3 (c) is a view showing the intensity adjustment pattern of the laser of the HL disk. The optical disc produced in accordance with this embodiment is an HL disc, so the intensity adjustment of the laser as shown in Fig. 3 (c) is performed, and bar code information is recorded. Further, in the strip S-field C, before the information is recorded, the entire recording layer of the optical disc is in a state after the sputtering, that is, an amorphous state. Thus, in the present example, the area irradiated with the local laser power (600 μ, 4 w ) is heated to a crystalline state, and bar code information is recorded by the reflectance change of the portion. In the HL disk, as shown in FIG. 3(c), in the region like the region Η in FIG. 3(a), the portion where the higher reflectance is planned to be irradiated is irradiated to achieve the strength of the crystal (in FIG. 3). In (c), the light beam of 6,000 Mw) is crystallized, and in the region L like the region L in Fig. 3 (a), the portion where the low reflectance is planned (the portion in the recording state) is irradiated with a weak intensity ( In Fig. 3(c), the light beam of 150 k watts is kept in an amorphous state. By adjusting the beam intensity as described above, a bar-shaped mark group corresponding to the reflectance pattern shown in Fig. 3(a) is formed. Next, while the longitudinal direction of the laser spot is substantially the same as the radius of the optical disk, the laser spot is moved to the outer side in the radial direction every time the optical disk is rotated one turn. At this time, the amount of movement of the laser spot per revolution is 3 6 m. Further, as shown in the bar code area C in Fig. 1, the respective recording marks of the mark group forming the bar code are emitted in the same plane with respect to the center -29-(27) 1261832 of the optical disk, so that the optical disk rotates for one week, The light-adjusted pattern of the laser (the moment of exposure of the laser light) is synchronized with the information to be recorded. In this example, the optical disk is rotated about 30 times, and the length in the radial direction is about 1 mm. In the track direction, the width of the multi-track direction is about 】V ηι, and the recording mark 5' is formed as shown in FIG. In that case, the bar coded mark group of the barcode area C. (Second Embodiment) In the second embodiment, an LH disk as a phase change recording method of a compact disc was produced. The schematic plan view of the optical disc produced in this example is the same as that of the drawing. In the barcode area C, not only the identification information of the disc of the media ID, the version (versi 〇η) information, but also the disc indicating the disc is recorded. Information on the relationship between the reflectance of the unrecorded state of the data area A and the reflectance of the recorded state. Specifically, since the optical disk produced according to the present example is an L. disk, information indicating an increase in the recording reflectance is recorded in a predetermined area of the bar code area C. Further, in the barcode area C, it is also possible to record the reflectance of the unrecorded state of the user data area 和 and the reflectance of the recording state as information relating to the reflectance of the optical disc. The recording method of the information in the barcode area C will be described later. (Manufacturing Method of Optical Disc) Fig. 4 is a schematic cross-sectional view showing a compact disc produced in accordance with the present embodiment. The optical disk 20 manufactured according to the present example has a configuration in which the first protective layer 2 1 and the second protective -30-(28) 1261832 are sequentially stacked on the substrate] as shown in FIG. 4 . The protective layer 2, the third protective layer 23, the first heat stabilizing layer 3, the recording layer 4', the second heat stabilizing layer 5, the intermediate layer 6, the thermal diffusion layer 7, the UV resin layer 8, and the transparent substrate 9. Further, in the above-described embodiment, the above layers are formed on the user lean region A, the control data region B, and the barcode region C of the optical disk 20. Next, a method of manufacturing the optical disk of this embodiment will be described. However, the substrate 1 was produced in the same manner as in the first embodiment. First, (ZnS)8G(SiO2)2(} as the i-th protective layer 21 is formed on the substrate by a thermal spraying method at a film thickness of 5 Gnm. Next, on the second insulating layer 2 The Al2〇3 as the second protective layer 22 was formed by a thermal spraying method in accordance with the film thickness of 4 Q nm. Then, the second protective layer 22 was formed into a third thickness by a sputtering method in a film thickness of 20 nm. (ZnS)8c(Si〇2)2Q of the protective layer 23. That is, in the optical disc of the embodiment, the protective layer has a three-layer structure. In the present embodiment, since the protective layer has a three-layer structure, each layer is utilized. The effect of the intermittent effect is to reduce the reflectance of the region in the crystalline state corresponding to the unrecorded state, and to improve the reflectance of the region in the amorphous state corresponding to the recorded state. Next, on the third protective layer 23, By the thermal spraying method, Ge8Cr2-N (represented by the relative ratio) of the first heat-stabilizing layer 3 is formed in accordance with the film thickness of 2 nm. Then, the film of the 〇nm film is formed by the thermal spraying method on the first heat-stabilizing layer 3 Thick, formed as B i3 G e 4 7 T e 5 as the recording layer 4. Then, on the recording layer, 'by shot blasting' is followed by 2 nm The film thickness 'is formed as GesC^N (relative ratio) of the second heat-stabilizing layer 5. Then, on the second heat-stabilizing layer 5, a film thickness of 35 nm is formed as a middle layer-31 by a sputtering method. - (29) 1261832 6 (Z n S ) 5 〇 (S i 〇 2) 5 〇. Then, on the intermediate layer 6, by thermal spraying, a film thickness of 50 nm is formed as a thermal diffusion layer 7 Then, an ultraviolet curable resin as the UV resin layer 8 was applied onto the thermal diffusion layer 7, and a transparent substrate 9 made of a polycarbonate (pdy-carbonaie) having a thickness of 〇.6 mn was placed thereon. The ultraviolet curable resin is cured by irradiating the ultraviolet ray 5 through the transparent substrate 9, and the transparent substrate 9 is adhered to the UV resin layer 8. By the above manufacturing method, the optical disk of the phase change recording method shown in Fig. 2 is obtained. Further, in the optical disk 20 manufactured in accordance with the present embodiment, the reflectance of the portion in the unrecorded state (crystalline state) is 5%, and the portion in the recorded state (amorphous state), that is, the reflectance of the recording mark portion. I 6%. (Method of forming barcode area C) In accordance with this embodiment In the manufactured optical disc, in addition to the pattern of the intensity adjustment of the laser when the strip shape code mark group is formed in the barcode area C, the barcode area C is formed in the same manner as in the first embodiment. The method of forming the barcode area C of the produced optical disc will be described. Also in this example, the intensity of the laser when recording the bar code information of the reflectance pattern as shown in Fig. 3 (a) is considered as in the first embodiment. Adjustment. The optical disc produced in accordance with this embodiment is an LH disc. The intensity adjustment of the laser as shown in Fig. 3 (b) is performed, and the bar code information is recorded. Further, in the bar code area C, before the information is recorded, the entire surface of the recording layer of the optical disk - 32 - (30) 1261832 is in a state after the sputtering, that is, an amorphous state. Thus, in the present embodiment, the region irradiated with a high laser power (600 mW) is heated to become a crystalline state, and the reflectance of the portion changes, whereby the information is recorded. In the L disk, as shown in FIG. 3(b), the portion (the portion of the recording state) planned to have a higher reflectance is irradiated weakly like the region Η in FIG. 3(a). The intensity (in FIG. 3(b), 50 mW) of the laser is maintained in an amorphous state, and the portion planned to have a lower reflectance in the region L like the one in FIG. 3(a) (not In the portion where the state is recorded, the laser which can achieve the intensity of crystallization (600 nm in Fig. 3 (b)) is irradiated to realize crystallization. By adjusting the laser intensity as described above, similarly to the HL disk, the LH disk is formed in the same manner as the HL disk, and a bar-shaped mark group corresponding to the reflectance pattern as shown in Fig. 3(a) is formed. As is apparent from Fig. 3, when the optical disk is an LH disk as in the present embodiment, the intensity adjustment pattern of the laser (Fig. 3(b)) is a thunder with the HL disk (first embodiment). The intensity adjustment pattern of the shot (Fig. 3(c)) is reversed, whereby information of the same reflectance pattern can be formed (Fig. 3(a)). If the information of the bar code area of the recorded information is reproduced by such a method, the information can be reproduced in accordance with the same reflectance range regardless of the type of the optical disk (HL disk or LH disk). Therefore, when the information of the barcode area C is reproduced, it is not necessary to perform gain adjustment or the like in accordance with the type of the optical disk, and the information of the barcode area C can be reproduced quickly and with high reliability. -33- (31) 1261832 Third Embodiment (Structure of Optical Disc) In the third embodiment, an organic dye ^ M HL disc was produced as a compact disc. According to the schematic diagram of the optical disc produced in this embodiment, the "$ map is the same as that of Fig. 2, as shown in the figure, from the outer peripheral side, the surface _ and Η

—奸闲者資料區域A，控制資料區域Β和條碼區域C 設虞笮私作 者資料區域Α用於記錄使周者資料·該控制資- The treacherous information area A, the control data area 条 and the barcode area C 虞笮 虞笮 虞笮 资料 资料 Α Α Α Α · · ·

，該反eJ ^ R用於記錄光碟的物理格式資訊，該條碼區域C 料區域 _省沿軌道排列有沿半徑方向延俾的多個標記而形成 用於適^ 派狀的標記組（也稱爲“條碼資訊”）記錄資訊。 的條碼趴 g亥使用者資料區域A設置於光碟的半徑約在2 3 · 8〜 m的範圍內的區域，在該使用者資料區域 A，呈螺 5 ^ ^ 旋狀，形成有軌道間距爲0.4 V m，深度爲8 0 n m的溝。另 外，在使用者資料區域A，通過使溝沿徑向偏向，形成包 括位址資訊的標題記錄部（圖中未示出）。 上述控制資料區域B設置於光碟的半徑約在2 3 . 3〜 2 3 . 8 mm的範圍內的區域，光碟的物理格式資訊由軌道間 距爲〇 . 6 8 // m，最短標記長度爲0.4 m的1〜7調節的凹坑排 形成。另外，在使用者資料區域A與控制資料區域B之 間，設置有約1 〇 // m的連接區域（圖中未示出）。 上述條碼區域c設置於光碟的半徑約在2 2.2〜 2 3 · 2 m m的範圍內的區域’在該條碼區域C ,不僅記錄有 媒體ID，版本（version )資訊等的光碟的識別資訊，而 -34- (32) 1261832 且記錄有表示光碟的使用者資料區域 A的未記錄狀態的 反射率與記錄狀態的反射率之間的關係的資訊。具體來說 ’由於按照本實施例製作的光碟爲H L盤，故在條碼區域 C的規定區域，記錄因記錄而使反射率下降的資訊。另外 ’在該條碼區域C，也可記錄作爲與光碟的反射率有關的 資訊的，使用者資料區域Α的未記錄狀態的反射率和記 錄朕態的反射率的値。關於在條碼區域C的資訊的記錄方 法，將在後面進行描述。 (光碟的製造方法） 圖7表示按照本實施例製作的有機色素光碟的不意性 剖視圖。按照本實施例製作的光碟3 0像圖7所示的那樣’ 具有下述的結構，即，在基板]上，依次疊置有基底層3 2 、有機色素記錄層3 4 '熱擴散層7、U V樹脂層8和透明基 板9。另外，在該實施例中，在光碟3 0的使用者資料區域 A、控制資料區域B和條碼區域C上，形成上述各層。下 面對本實例的光碟的製作方法進行描述。 首先，採用母盤（stampei·)，通過注射成形，製作 聚碳酸醋（p ◦1 y — c a r b 〇 n a te)制的，直徑爲12 0 m m ’厚度 爲Ο . 6的基板]。此時，在使用者資料區域A，形成軌道間 距爲〇 . 4 // ηι，深度爲8 Ο n m的螺旋狀的凹軌（g r ο ο V e ) ’ 在控制資料區域B，形成軌道間距爲〇 . 6 8 W m，最短標記 長度爲〇 . 4 V m的凹坑排。 -35- (33) 1261832 接著，在該基板1上，通過噴鍍方式’按照20 nm的膜 厚，形成作爲基底層3 2的（Z n S ) 8 〇 ( S】〇 2 ) 2 〇。接著，在 該基底層32上，形成在 諾酮（carbostyril )系化合物中 ，含有由下述的化學式（1 )表示的有機色素的有機色素 記錄層3 4。具體來說，將〇. 5 g的，由下述的化學式（1 ) 表示的有機色素溶解於4〇g 的八氟戊醇 （ octaf]uo】.oPentanol)中，在40t：的溫度下對其進行30分鐘 的超音波分散處理5然後，通過0 · 2 μ m的濾紙進行過濾 。接著，按照1300rpm的轉數，將該過濾液旋塗（ s p i n c 〇 a t )於基板1上，通過8 0 °C的烘箱，進行3 〇分鐘的乾 燥，形成有機色素記錄層3 4。有機色素記錄層3 4的膜厚爲 8 0 n m。接著，在有機色素記錄層3 4上，通過噴鍍方式， 按照1 5 0 n m的膜厚，形成作爲熱擴散層7的A g I 9 7 R u 2 C u 1。 化學式1 c 3The anti-eJ ^ R is used to record the physical format information of the optical disc, and the barcode area C material area is arranged along the track with a plurality of marks extending in the radial direction to form a mark group for adapting the shape (also called Record information for "Barcode Information". The bar code 趴ghai user data area A is set in the area where the radius of the optical disc is about 2 3 · 8~ m, and in the user data area A, the spiral is 5 ^ ^, and the track pitch is formed. 0.4 V m, a groove with a depth of 80 nm. Further, in the user data area A, a header recording portion (not shown) including address information is formed by biasing the groove in the radial direction. The control data area B is set in an area where the radius of the optical disc is about 2 3 . 3~ 2 3 . 8 mm, and the physical format information of the optical disc is 〇. 6 8 // m, and the shortest mark length is 0.4. A 1 to 7-adjusted pit row of m is formed. Further, between the user data area A and the control data area B, a connection area (not shown) of about 1 〇 // m is provided. The barcode area c is disposed in an area of the optical disc having a radius of about 2 2.2 to 2 3 · 2 mm. In the barcode area C, not only the identification information of the disc of the media ID, the version information but also the information is recorded, and -34- (32) 1261832 A message indicating the relationship between the reflectance of the unrecorded state of the user data area A of the optical disc and the reflectance of the recorded state is recorded. Specifically, since the optical disk produced according to the present embodiment is an HL disk, information indicating that the reflectance is lowered due to recording is recorded in a predetermined area of the barcode area C. Further, in the bar code area C, the reflectance of the unrecorded state of the user data area 和 and the reflectance of the recorded state can be recorded as information relating to the reflectance of the optical disk. The recording method of the information in the barcode area C will be described later. (Manufacturing Method of Optical Disc) Fig. 7 is a schematic cross-sectional view showing an organic dye optical disc produced in accordance with the present embodiment. The optical disk 30 manufactured in accordance with the present embodiment has a structure in which a base layer 3 2 and an organic dye recording layer 34 4 'thermal diffusion layer 7 are sequentially stacked on the substrate as shown in FIG. 7 . , a UV resin layer 8 and a transparent substrate 9. Further, in this embodiment, the above layers are formed on the user data area A, the control data area B, and the barcode area C of the optical disc 30. The method of manufacturing the optical disc of this example will be described. First, a master plate (stampei·) was used to prepare a substrate having a diameter of 12 0 m m and a thickness of 120 Å by injection molding. At this time, in the user data area A, a spiral concave track (gr ο ο V e ) having a track pitch of 〇. 4 // ηι and a depth of 8 Ο nm is formed. In the control data area B, the track pitch is formed. 6. 6 8 W m, the shortest mark length is 〇. 4 V m pit row. -35- (33) 1261832 Next, (Z n S ) 8 〇 (S 〇 2 ) 2 作为 as the underlayer 3 2 was formed on the substrate 1 by a thermal spraying method in accordance with a film thickness of 20 nm. Next, an organic dye recording layer 34 containing an organic dye represented by the following chemical formula (1) in a carbostyril-based compound is formed on the underlayer 32. Specifically, an organic pigment represented by the following chemical formula (1) is dissolved in 4 g of octafluoropentanol (octaf] uo].oPentanol, at a temperature of 40 t: It was subjected to ultrasonic dispersion treatment for 30 minutes and then filtered through a filter paper of 0·2 μm. Next, the filtrate was spin-coated (s p i n c 〇 a t ) on the substrate 1 at a number of revolutions of 1300 rpm, and dried in an oven at 80 ° C for 3 minutes to form an organic dye recording layer 34. The film thickness of the organic dye recording layer 34 was 80 n. Next, on the organic dye recording layer 34, A g I 9 7 R u 2 C u 1 as the thermal diffusion layer 7 was formed by a sputtering method in accordance with a film thickness of 150 nm. Chemical formula 1 c 3

.CO〇C2H.CO〇C2H

接著，在熱擴散層7上，塗敷作爲UV樹脂層8的紫外 “硬化樹fe ’在其上再放置厚度爲〇 · 6 m η的聚碳酸醋（ P〇]y— carbonate)制的透明基板9。然後，透過該透明基 -36- (34) 1261832 板9，照射紫外線使紫外線硬化樹脂硬化，由此，將透明 基板9粘貼於U V樹脂層8上。通過以上的製造方法，獲得 圖7所示的有機色素型的光碟3 0。 另外，在按照本實例製作的光碟中，沒有溝和凹坑的 反射鏡（mirror )區域的未記錄狀態的部分的反射率爲 4 〇%，記錄狀態的部分，即，記錄標記部的反射率爲]0% (條碼區域C的彫成方法） 在按照本實施例製作的光碟中，像上述那樣，在光碟 的半徑約在2 2.2〜2 3.2 m m的範圍內的，在寬度爲1 m m的 區域形成條碼區域C。形成於該條碼區域C內的條形狀碼 的標記組採用具有4 0 5 n m的波長的雷射的條碼形成器（圖 中未示出），像下述這樣構成。 將按照本實施例製作的光碟安裝于條碼形成器內’按 照2400rpm的轉速使光碟旋轉，對光碟照射波長爲4〇5nm 的雷射。此時，雷射的光點（spot)按照形成光碟的半徑方 向的長度，與軌道方向的長度（寬度）均約爲〇 . 6 M m的形狀 的方式聚焦，對應於記錄於該條碼區域C中的資訊，在條 碼區域C上的規定位置，照射雷射。但是，照射到光碟上 的雷射的功率在1〇〜〇.5mW之間調節。 圖6表示在條碼區域 C，形成條碼狀的標記組時的， 雷射的強度調節的圖案。在圖6中，圖6 (b )和圖6 ( c )表示記 -37- (35) 1261832 錄圖6(a)所示的那樣的，反射率圖案的條碼資訊時的雷射 的強度調節的狀態。圖6(b)爲表示HL盤的雷射的強度調 節圖案的圖，圖6 ( c )爲表示 L Η盤的雷射的強度調節圖案 的圖。本實施例製作的光碟爲HL盤，所以按照圖6(1〇所 示的那樣的5進行雷射的強度調節，記錄條碼資訊。另外 ，在於條碼區域C中·記錄資訊之前，處於光碟的記錄層 全靣處於未記錄狀態。於是，在本霣例中，照射了較高的 雷射功率（1 OMw)的區域受到加熱$變爲記錄狀態，該部 分的反射率變化，由此，記錄條碼資訊。 在H L盤中，像圖6 (b )所示的那樣，在像圖6 ( a)中的 區域Η那樣，對計劃爲較高的反射率的部分（未記錄狀態 的部分），照射較弱的強度（在圖6(1〇中，爲O.SmW)的光束 ，保持未記錄狀態，在像圖6 (a)中的區域L那樣，對計劃 爲低反射率的部分（記錄狀態的部分），照射實現記錄的強 度（在圖6(b)中，爲]OmW)的光束，處於記錄狀態。通過像 這樣，調節光束強度，形成與圖6(a)所示的那樣的，反射 率圖案相對應的條碼狀的標記組。 接著，在使雷射光點（s p 〇 t)的縱向與光碟的半徑方向 基本一致的同時，每當光碟旋轉]圈，將雷射光點（spot)移 向半徑方向的外側。此時，每圈的雷射光點（s p 〇 t)的移動 量在0.6 μ m以下。另外，像圖1中的條碼區域C所示的那 樣，按照使形成條碼狀的標記組的各記錄標記相對光碟的 中心，以相同的寬度呈放射狀形成的方式，每當光碟旋轉 -38- (36) 1261832 ]圈，使雷射調節的圖案（雷射光照射的時刻）與應記錄的 資訊同步。在本實施例中，使光碟約旋轉約17 0 〇圈，半徑 方向的長度約爲1 m m ’軌道方向的寬度約爲】V m的多個 記錄標記沿軌道方向排列，形成圖1所示的那樣的’條碼 區域c的條碼狀的標記組° 第4實施例 (光碟的結構） 在第4實施例中，製作了作爲光碟的，具有有機色素 記錄層的L Η盤。按照本實施例中製作的光碟的示意性平 面圖與圖3，即圖1相同，在條碼區域C ’不僅記錄媒體 I D，版本（v e r s i 〇 η )資訊等的光碟的識別資訊’而且記 錄表示光碟的使用者資料區域Α的未記錄區域的反射率 與記錄狀態的反射率之間的關係的資訊。具體來說，按照 本實施例製作的光碟爲LH光碟，在條碼區域C的規定區 域，記錄因記錄使反射率上升的資訊。另外，在該條碼區 域C，也可記錄作爲與光碟的反射率有關的資訊的，使用 者資料區域A的未記錄狀態的反射率和記錄狀態的反射 率的値。關於在條碼區域C的資訊的記錄方法，將在後面 進行描述。 (光碟的製造方法） 圖8表示按照本實施例製作的光碟的示意性剖視圖。 -39- (37) 1261832 按照本實施例製作的光碟4 0像圖8所示 的結構，即，在基板1上，依次有機色 散層7、U V樹脂層8和透明基板9。另外 光碟的使用者資料區域A、控制資料區 上，形成上述各層。下面對本實施例的 行描述。其中，基板1按照與第3實施例 首先，在該基板1上，彤成在 ϋ 系化合物中，含有與第3實施例相同的 (1 )表示的有機色素的有機色素記錄 將〇 · 5 g的，由上述的化學式（1 )表示 4 〇 g 的八氟戊醇（〇 c t a f 1 u ο 1· 〇 p e η i a η 〇 ]) 下對其進行3 Ο分鐘的超音波分散處理， 的濾紙進行過濾。接著，按照1 OOOrpm 液旋塗（s p i n c 〇 a t )於基板1上，用8 0 t： 的乾燥，形成有機色素記錄層44。有機 爲150nm。接著，在有機色素記錄層 式，按照1 5 0 n m 的膜厚，形成作 接著，在熱擴散層7上，塗敷作爲 夕^線硬化樹脂，在其上，再放置厚度爲 carbonate)制的透明基板9。 ®扳9照射紫外線，使紫外線硬化樹脂 明基板9粘貼於UV樹脂層8上。通過以 的那樣，具有下述 素記錄層4 4、熱擴 ，在該實例中，在 域B和條碼區域C 光碟的製作方法進 相同的方式製作。 I1! ( c a r b 〇 s t y r i 1 ) ’由上述的化學式 層44。具體來說， 的有機色素溶解於 中，在40t的溫度 然後，通過0.2 // ηι 的轉數，將該過濾 的烘箱進行30分鐘 色素記錄層44的膜 44上，通過噴鍍方 爲熱擴散層7的 UV樹脂層8的，紫 0.6mn的聚碳酸酯 然後，透過該透明 硬化，由此，將透 上的製造方法，獲 -40- (38) 1261832 得圖8所示的有機色素記錄型的光碟4 0。 另外，在按照本實施例製作的光碟中， 部分的反射率爲1 6 %，記錄狀態的部分，即 的反射率爲3 2 %。 (條碼區域C的形成方法） 在按照本實施例製作的光碟中，除了在 形成條碼狀的標記組時改變雷射強度調節的 照與第3實施例相同的方式，形成條碼區域 照本實例製作的光碟的條碼區域C的形成方 同樣在本實施例中，與第3實施例相同 (a )所示的反射率圖案的條碼資訊時的雷 。因爲按照本實施例製作的光碟爲LH盤， 示的那樣進行雷射的強度調節，記錄條碼資 於條碼區域C記錄資訊之前，光碟的記錄層 於未記錄的狀態。於是，照射了較高的雷I )的區域變爲記錄狀態，該部分的反射率變 錄資訊。 在LH盤中，像圖6(c)所示的那樣，拍 區域Η那樣，對計劃爲較高的反射率的部 部分），照射實現記錄的強度（在圖6(c)中， 射使處於記錄狀態，在像圖6(a)中的區域L 爲較低的反射率的部分（未記錄狀態的部分: 未記錄狀態的 ，記錄標記部 條碼區域 C， 圖案以外，按 C。下面對按 法進行描述。 ，考慮記錄圖6 射的強度調節 像圖6 ( c )所 訊。另外，在 的整個表面處 }·寸功率（1 0 m W :化，由此，記 Ξ像圖6 ( a )中的 分（記錄狀態的 爲1 0 m W )的雷 那樣，對計劃 )，照射較弱的 - 41 - (39) 1261832 強度（在圖6(c)中，爲0.5m W)的雷射，保持未記錄狀態。 通過像這樣5調節雷射強度，同樣在LH盤中與HL盤相 同，形成與像圖6 ( a )所示的那樣的反射率圖案相對應的條 碼狀的標記組。 像根據圖6知道的那樣，在光碟像本實施例那樣爲LH 盤的場合，使該雷射的強度調節圖案（圖6(c))，爲與 HL 盤（第3實施例）的雷射的強度調節圖案（圖6(b))相反的圖案 ，由此，可形成相同反射率圖案的資訊（圖6(a))。如果再 生通過這樣的方法所記錄資訊的條碼區域的資訊5則與有 機色素型的光碟的種類（HL盤，或LH盤）無關，可按照基 本相同的反射率範圍內的値，再生資訊。於是，在再生條 碼區域C的資訊時，對應於光碟的種類，不必進行增益調 整等，可快速地，並且以較高的可靠性，再生條碼區域 C 的資訊。 第5實施例 (記錄再生裝置） 圖5表示對按照第1〜第4實施例製作的光碟，進行資 訊記錄和資訊用的記錄再生裝置。本實施例的記錄再生裝 置1 00像圖5所示的那樣，主要由馬達12，光學頭13，增益 調整電路14，伺服電路15，LH/HL判斷電路16與再生信號 處理電路1 7構成，該馬達1 2用於使按照第1〜第4實施例製 作的光碟5 0旋轉，該光學頭I 3對光碟5 0照射雷射，該增益 -42- (40) 1261832 調整電路]4調整再生信號的放大率，該伺服電路]5用於進 行尋軌控制，該LH /H L判斷電路1 6用於判斷光碟5 0的種 _ ( H L盤，或L Η盤），該再生信號處理電路1 7根據再 生信號，進行資訊再生。另外，在圖5所示的記錄再生裝 寘]0 0中，僅僅對資訊再生部進行描述。記錄再生裝置5 0 〇 內的資訊記錄部爲與現有的光碟的記錄再生裝置相同的結 _，故在圖5中省略。 再生信號處理電路1 7如圖5所示的那樣’主要包括資 料解調器]8和位±ih解調器1 9。該資料解調器1 8根據從光學 gg 1 3通過增益調整電路1 4輸入的條碼資訊、控制資料和使 用者資料的再生信號，進行資訊再生，將再生結果輸出給 再生資訊處理系統（圖中未示出）。另外，地址解調器19 _據從光學頭1 3，通過增益調整電路1 4輸入的位址資訊的 再生信號，進行資訊再生，將再生結果輸出給再生資訊處 理系統。 光學頭13包括波長4 05 nm的雷射光源，數値口徑爲 〇 . 6 5的物鏡。在將雷射從光學頭1 3照射到光碟5 0時，按照 聚焦於光碟5 0面上的雷射的光碟5 0面上的強度爲〇 . 5 m W的 方式，調整雷射強度。另外，在本實施例中，作爲進行資 訊的記錄再生時的旋轉控制方法，採用在每個進行記錄再 生的區域，使光碟50的轉數變化的ZCLV方式。 圖5所示的記錄再生裝置1 〇 〇中的，資訊的記錄和再生 步驟如下所述。首先，在將光碟5 0安裝于記錄再生裝置 -43- (41) 1261832 ]〇 〇上後，通過馬達1 2，按照規定的轉數 接著，在已旋轉的光碟5 0的條碼區域 C， 雷射以再生條.碼區域C的資訊。此時，按 位置在保持在光碟面上的方式，進行聚焦 此時，由於條碼區域C的資訊由沿半 的長度（約I m m )的條碼狀的標記組彤成 格地進行雷射的半徑方向的位置控制的情 在未嚴格地進行尋軌控制的情況下，仍可 生。另外，如杲在一周的範圍內，重覆地 域C的資訊進行記錄，則條碼區域C的 性進一步提高。另外，像上述的條碼區域 描述的那樣，在光碟5 0的條碼區域 C，與 HL盤，或LH盤）無關，可按照條形狀 射率的範圍爲相同値的方式形成，由此， 資訊再生中’不必對應於光碟5 0的種類， ，可快速地，並且以較高的可靠性進行該 接著，從條碼區域C檢測的再生信號 5 〇是H L盤，還是L Η盤的資訊，即，與 有關的資訊通過增益調整電路1 4，輸入至丨 路1 6中。 在LH/HL判斷電路1 6中，根據已輸 反射率有關的資訊，判斷光碟5 〇是H L盤 接著，將該判斷結果送給增益調整電路ρ 使光碟5 0旋轉。 從光學頭]3照射 照使雷射的焦點 調整。 徑方向具有足夠 ，故郎使在不嚴 沅下，即，即使 容易進行資訊再 對記錄於條碼區 資訊再生的可靠 C的形成方法所 光碟5 0的種類（ 碼的標記組的反 在條碼區域C的 進行增益調整等 再生處理。 中的，表示光碟 光碟5 0的反射率 I LH/HL判斷電 入的與光碟5 0的 ，還是LH盤。 ，增益調整電路 -44 - (42) 1261832 1 4根據該判斷結果，確定從光學頭1 3輸入的再 合的放大率。 然後，將光學頭]3移動到控制資料區域B 控制再生控制資料。從預先記錄於控制資料區 坑排中，讀出與盤的物理格式（記錄極性、反 記錄條件（記錄線速度、記錄功军、記錄脈衝 關的資訊，將其存儲于記錄再生裝置內的記錄 由未不出）c 接著，將光學頭1 3移動到使用者資料區每 的位址區域，根據已再生的控制資料區域B的 資料記錄。 記錄於使用者資料區域 A中的資訊的再 所述。使光學頭1 3移動到使用者資料區域 A 址區域，照射雷射，通過光學頭1 3，檢測來自 射光信號（再生信號）。通過光學頭1 3檢測的 增益調整電路1 4以適合的放大率放大，將其送 器1 8。在資料解調器1 8中，從已放大的再生信 者資訊，將其送出給再生資訊控制系統。 在上述的記錄再生裝置中，在對控制資料 用者資料區域A的資訊進行再生之前，可根 條碼區域C中的光碟的種類（HL盤，或LH 資訊，確定適合的再生信號的放大率。於是， 料區域B和使用者資料區域A的資訊進行再 生信號的適 ，進行尋軌 域B中的凹 射率等）， 幅度等）有 控制部（圖 ! A 的規定 資訊，進行 生步驟如下 的規定的位 光碟5 0的反 再生信號被 向資料解調 號再生使用 區域B與使 據與記錄於 盤）有關的 在對控制資 生時，不對 -45- (43) 1261832 應於光碟的種類，調整增益，獲得適合的振幅的再生信號 。於是，可進一步快速地，並且以較高的可靠性的方式再 生記錄於光碟上的資訊。另外，即使在檢測光碟的尋軌用 的伺服信號時，也與光碟的種類無關，可按照適合的振幅 檢測信號，由此，可以更高的可靠性5進行資訊再生。 在上述的記錄再生裝置中，分別安裝按照第1〜第4實 施例製作的光碟，進行資訊的記錄和再生，此時，與相變 記錄型和有機色素型的光碟是HL光碟，還是LH光碟無 關，可在不調整增益的情況下，以較高的可靠性，再生使 用者資訊。 在第1和第2實施例中，像圖3所示的那樣，在形成光 碟的條碼區域C.的條形狀碼的標記組時，在保持在非晶質 狀態的區域，照射較弱的強度（1 5 OmW )的雷射，但是， 本發明並不限於此，也可不對保持在非晶質狀態的區域照 射雷射。 在上述第1〜第4實施例中，在圖1中的條碼區域C， 在光碟的一周範圍內記錄資訊，但是，本發明並不限於此 ，也可在條碼區域C的一部分，形成條碼狀的標記組。另 外，也可重覆地記錄應記錄於條碼區域C中的1組的資訊 (與光碟的識別資訊、光碟的反射率有關的資訊等）。重 覆地在條碼區域C記錄資訊，由此，條碼區域C的資訊 的可靠性進一步提高。 -46- (44) 1261832 缝業上的利用可能性 按照本發明的光碟，由於在條碼區域記錄與光碟的反 ^率有關的資訊，故在不進行嚴格的尋軌控制和增益調整 ^ k況Ί、’容易獲得這些資訊。其結果是，可進行快速的 續佳的再生信號的增益調整。於是，本發明的光碟可成爲 與光碟的楂_ ( HL盤，或LH盤）無關，可快速进’ <且以較局的可靠性，再生控制資料區域和使用者資料區 域的資訊與尋軌用伺服信號光碟。 按照本發明的記錄再生裝置和再生方法，在不進行嚴 _的尋軌控制和增益調整的情況下，檢測記錄於光碟的條 域中的光碟的反射率的資訊，根據該資訊，判斷光碟 的種類（H L盤，或LH盤），確定再生信號的適合的放 Α率。於是，本發明的記錄再生裝置和再生方法與光碟的 _類（HL盤，或LH盤）無關，快速地，並且以較高的 $靠性，用於再生控制資料區域和使用者資料區域的資訊 %尋軌用的伺服信號的最適合記錄再生裝置和再生方法。 另外，按照本發明的光碟的製造方法，在於通過相變 材料形成的記錄層，形成條碼狀的標記時，對應於光碟的 種類，像圖3所示的那樣，使光束的強度調節的圖案相反 ’由此，HL盤、LH盤均可形成相同的反射率圖案的資訊 。另外，在於由有機色素材料形成的記錄層上，形成條碼 狀的標記時，對應於光碟的種類，像圖6所示的那樣，使 光束的強度調節的圖案相反，由此，H L盤、L Η盤均可形 -47- (45) 1261832 成相同的反射率圖案的資訊。其結果是，在按照本發明的 製造方法製作的光碟中，在對條碼區域的資訊進行再生時 ，可與光碟的種類（HL盤，或LH盤）無關，按照相同的反 射率範圍的値進行再生。於是，本發明的製造方法是製造 可不對應於光碟的種類進行增益調整等，快速地，述且以 較高的可靠性，再生條碼區域的資訊的光碟的最適合的製 造方法 c [圖式簡單說明】 圖]爲按照第1實施例製作的光碟的示意性平面圖； 圖2爲按照第]實施例製作的光碟的示意性剖視圖； 圖3爲表示按照第1和第2實施例製作的光碟的條碼區 域C的資訊的反射率圖案和用於形成該圖案的雷射的強度 調節的狀態圖，圖3 ( a )爲反射率圖案，圖3 ( b )爲採用 相變化記錄膜的LH盤的雷射的強度調節圖案，圖3 ( c ) 爲採用相變化記錄膜的HL盤的雷射的強度調節圖案； 圖4爲按照第2實施例製作的光碟的示意性剖視圖； 圖5爲本發明的記錄再生裝置的示意結構圖； 圖6爲表示按照第3和第4實施例製作的光碟的條碼區 域C的資訊的反射率圖案和用於形成該圖案的雷射的強度 調節的狀態圖，圖6 ( a )爲反射率圖案，圖6 ( b )爲採用 有機色素記錄膜的HL盤的雷射的強度調節圖案，圖6 ( c )爲採用有機色素記錄膜的LH盤的雷射的強度調節圖案 -48 - (46) (46)1261832 圖7爲按照第3實施例製作的光碟的示意性剖視圖 圖8爲按照第4實施例製作的光碟的示意剖視圖。 【主要元件符號說明】 ] 基板 2 保護層 第]熱穩定層 4 記錄層 5 第2熱穩定層 6 中間層 7 熱擴散層 8 U V樹脂層 9 透明基板 10 光碟 12 馬達 13 光學頭 14 增益調整電路 15 伺服電路 16 L H / H L判斷電路 17 再生信號處理電路 ]8 資料解調器 19 位址解調器 •49- (47) 1261832 2 0 光碟 2 1 第1保護層 2 2 第2保護層 2 3 第3保護層 3 0 光碟 3 2 基底層 3 4 有機色素記錄層Next, on the thermal diffusion layer 7, a transparent "curing tree" of the UV resin layer 8 is coated with a polycarbonate (P〇]y-carbonate having a thickness of 〇·6 m η. Then, the transparent substrate-36-(34) 1261832 plate 9 is irradiated with ultraviolet rays to cure the ultraviolet curable resin, whereby the transparent substrate 9 is adhered to the UV resin layer 8. By the above manufacturing method, a pattern is obtained. An organic dye type optical disk 30 shown in Fig. 7. Further, in the optical disk produced according to the present example, the reflectance of the unrecorded portion of the mirror region having no grooves and pits was 4%, and the recording was performed. The portion of the state, that is, the reflectance of the recording mark portion is 0% (the method of engraving the barcode region C). In the optical disc produced according to the present embodiment, as described above, the radius of the optical disc is about 2 2.2 to 2 3.2. Within the range of mm, a bar code region C is formed in a region having a width of 1 mm. A tag group of bar shape codes formed in the bar code region C uses a laser bar code former having a wavelength of 405 nm (in the figure) Not shown), constructed as follows. The optical disc manufactured in accordance with the present embodiment is mounted in a bar code former to rotate the optical disk at a rotational speed of 2400 rpm, and irradiates the optical disk with a laser having a wavelength of 4 〇 5 nm. At this time, the spot of the laser is in accordance with the radius of the formed optical disk. The length of the direction, and the length (width) of the track direction are both about 6. 6 M m in a manner of focusing, corresponding to the information recorded in the bar code area C, at a predetermined position on the bar code area C, illuminating the laser However, the power of the laser light irradiated onto the optical disk is adjusted between 1 〇 and 5.5 mW. Fig. 6 is a view showing the pattern of intensity adjustment of the laser when the bar code-shaped mark group is formed in the bar code area C. In Fig. 6, Fig. 6(b) and Fig. 6(c) show the state of the intensity adjustment of the laser when the bar code information of the reflectance pattern is as shown in Fig. 6(a) of -37-(35) 1261832. Fig. 6(b) is a view showing the intensity adjustment pattern of the laser of the HL disk, and Fig. 6(c) is a view showing the intensity adjustment pattern of the laser of the L disk. The optical disk produced in this embodiment is an HL disk. Therefore, according to the 5 shown in Figure 6 (1), the intensity of the laser is adjusted and recorded. In addition, in the barcode area C, before the information is recorded, the recording layer on the optical disc is completely unrecorded. Thus, in this example, the area irradiated with a higher laser power (1 OMw) is subjected to The heating $ changes to the recording state, and the reflectance of the portion changes, thereby recording the bar code information. In the HL disk, as shown in Fig. 6 (b), like the region 图 in Fig. 6 (a), For the part that is planned to have a higher reflectance (the portion of the unrecorded state), the light beam with a weaker intensity (in Fig. 6 (1〇, O.SmW) is maintained, and remains unrecorded, as in Figure 6 ( In the region L in the a), the portion of the portion (the portion in the recording state) that is planned to have a low reflectance is irradiated with a light beam that achieves the intensity of recording (in the case of FIG. 6(b), is OmW), and is in a recording state. By adjusting the beam intensity as described above, a bar-shaped mark group corresponding to the reflectance pattern as shown in Fig. 6(a) is formed. Next, while the longitudinal direction of the laser spot (s p 〇 t) is substantially coincident with the radial direction of the optical disk, the laser spot is moved to the outer side in the radial direction every time the optical disk is rotated by a circle. At this time, the amount of movement of the laser spot (s p 〇 t) per revolution is 0.6 μm or less. Further, as shown in the bar code area C in Fig. 1, the recording marks of the mark group forming the bar code are radially formed in the same width with respect to the center of the optical disk, and the optical disk is rotated -38- (36) 1261832] circle, so that the laser-adjusted pattern (the moment of laser illumination) is synchronized with the information to be recorded. In the present embodiment, the optical disk is rotated by about 17 0 〇, and the length in the radial direction is about 1 mm. The plurality of recording marks having a width in the track direction of about V m are arranged in the track direction to form the one shown in FIG. In the fourth embodiment, a L-shaped disk having an organic dye recording layer as a compact disk is produced. The schematic plan view of the optical disc produced in accordance with the present embodiment is the same as that of FIG. 3, that is, FIG. 1, in which not only the identification information of the disc ID, the version (versi 〇η) information, etc., but also the recording of the disc is recorded in the barcode area C'. Information on the relationship between the reflectance of the unrecorded area of the user data area and the reflectance of the recorded state. Specifically, the optical disk produced in accordance with this embodiment is an LH optical disk, and information indicating that the reflectance is increased by recording is recorded in a predetermined area of the barcode area C. Further, in the barcode area C, it is also possible to record the reflectance of the unrecorded state of the user data area A and the reflectance of the recording state as information relating to the reflectance of the optical disc. The recording method of the information in the barcode area C will be described later. (Manufacturing Method of Optical Disc) Fig. 8 is a schematic cross-sectional view showing a compact disc produced in accordance with the present embodiment. -39- (37) 1261832 The optical disc 40 manufactured in accordance with the present embodiment has a structure as shown in Fig. 8, that is, on the substrate 1, the organic dispersion layer 7, the U V resin layer 8, and the transparent substrate 9 are sequentially arranged. Further, the above layers are formed on the user data area A and the control data area of the optical disc. The following describes the description of the embodiment. In the first embodiment, the substrate 1 is first formed in the lanthanide compound, and the organic dye recording of the organic dye represented by the same (1) as in the third embodiment is recorded on 基板·5 g. The filter paper of 4 〇g of octafluoropentanol (〇ctaf 1 u ο 1· 〇pe η ia η 〇) under the above chemical formula (1) is subjected to ultrasonic dispersion treatment for 3 Ο minutes. filter. Subsequently, the organic dye recording layer 44 was formed by spin coating (s p i n c 〇 a t ) on a substrate 1 at 100 rpm and drying with 80 t:. Organic is 150nm. Next, in the organic dye recording layer type, it is formed in a film thickness of 150 nm, and then coated on the thermal diffusion layer 7 as a sinus-hardening resin, and then placed on a thickness of carbonate. Transparent substrate 9. The ® plate 9 is irradiated with ultraviolet rays to adhere the ultraviolet curable resin substrate 9 to the UV resin layer 8. As a result, there is a recording layer 4 4 and a thermal expansion. In this example, the method of fabricating the optical disk in the domain B and the barcode region C is produced in the same manner. I1! ( c a r b 〇 s t y r i 1 ) ' is from the above chemical formula layer 44. Specifically, the organic pigment is dissolved in the film, and the filtered oven is subjected to a flow of 0.2 // η, and the filtered oven is subjected to the film 44 of the dye recording layer 44 for 30 minutes, and is thermally diffused by sputtering. The polycarbonate of the UV resin layer 8 of the layer 7 of 0.6 nm is then passed through the transparent hardening, whereby the manufacturing method of the permeation is obtained, and the organic pigment recording shown in Fig. 8 is obtained by -40-(38) 1261832. Type of disc 4 0. Further, in the optical disk produced in accordance with this embodiment, the partial reflectance was 16%, and the portion in the recorded state, i.e., the reflectance was 32%. (Method of Forming Bar Code Area C) In the optical disk manufactured according to the present embodiment, in addition to the method of changing the laser intensity adjustment when forming a bar-shaped mark group, the bar code area is formed in the same manner as in the third embodiment. Also in the present embodiment, the formation of the bar code region C of the optical disk is the same as that of the bar code information of the reflectance pattern shown in (a) of the third embodiment. Since the optical disk produced in accordance with this embodiment is an LH disk, the intensity of the laser is adjusted as shown, and before the recording bar code is recorded in the bar code area C, the recording of the optical disk is in an unrecorded state. Thus, the area irradiated with the higher Ray I) becomes the recording state, and the reflectance of the portion is recorded. In the LH disk, as shown in FIG. 6(c), the portion of the portion which is planned to have a high reflectance is irradiated to achieve the intensity of recording (in FIG. 6(c), the shot is made. In the recording state, in the portion where the region L in Fig. 6(a) is a lower reflectance (the portion in the unrecorded state: the unrecorded state, the recording mark portion barcode region C, and the pattern, press C. Describe the method according to the method. Consider the intensity adjustment of the record in Fig. 6 as shown in Fig. 6 (c). In addition, at the entire surface, the power is (10 m W : ,, ,, Ξ image The score in 6 (a) (the recorded state is 10 m W), as for the plan), the weaker - 41 - (39) 1261832 intensity (in Fig. 6(c), 0.5 m W The laser is kept in an unrecorded state. By adjusting the laser intensity as in this case, the same as the HL disk in the LH disk, the bar code shape corresponding to the reflectance pattern as shown in Fig. 6 (a) is formed. The mark group is as shown in Fig. 6. When the optical disk is an LH disk as in the present embodiment, the intensity adjustment pattern of the laser is made (Fig. 6(c)) is a pattern opposite to the intensity adjustment pattern (Fig. 6(b)) of the laser of the HL disk (the third embodiment), whereby information of the same reflectance pattern can be formed (Fig. 6 (a) )). If the information 5 of the bar code area in which the information recorded by such a method is reproduced is not related to the type of the organic dye type optical disk (HL disk, or LH disk), it can be reproduced in accordance with the range of the same reflectance range. Therefore, when the information of the barcode area C is reproduced, it is not necessary to perform gain adjustment or the like corresponding to the type of the optical disc, and the information of the barcode area C can be reproduced quickly and with high reliability. (Reproduction device) Fig. 5 shows a recording and reproducing device for recording information and information on the optical disk produced in the first to fourth embodiments. The recording and reproducing device 100 of the present embodiment is mainly composed of a motor as shown in Fig. 5 . 12. The optical head 13, the gain adjustment circuit 14, the servo circuit 15, the LH/HL determination circuit 16, and the reproduction signal processing circuit 17 are used for the optical disk 50 manufactured in accordance with the first to fourth embodiments. Rotating, the optical head I 3 is light The dish 50 emits a laser, the gain -42-(40) 1261832 adjustment circuit]4 adjusts the amplification factor of the reproduced signal, the servo circuit 5 is used for tracking control, and the LH /HL judging circuit 16 is used for judging The reproduction signal processing circuit 17 performs information reproduction based on the reproduction signal, and the reproduction signal processing circuit 17 in the recording/reproducing apparatus shown in Fig. 5 is only for the type of the optical disk 50. The information reproducing unit describes the information recording unit in the recording/reproducing device 500 as the same as the recording and reproducing device of the conventional optical disk, and therefore is omitted in Fig. 5 . The reproduced signal processing circuit 17 as shown in Fig. 5 'mainly includes a data demodulator' 8 and a bit ± ih demodulator 19. The data demodulator 18 performs information reproduction based on the bar code information, the control data, and the reproduction signal of the user data input from the optical gg 13 through the gain adjustment circuit 14, and outputs the reproduction result to the regenerative information processing system (in the figure) Not shown). Further, the address demodulator 19 performs information reproduction from the optical head 13 by the reproduction signal of the address information input from the gain adjustment circuit 14, and outputs the reproduction result to the reproduction information processing system. The optical head 13 includes a laser light source having a wavelength of 4 05 nm and an objective lens having a number of apertures of 〇 . When the laser is irradiated from the optical head 13 to the optical disc 50, the laser intensity is adjusted in such a manner that the intensity of the surface of the optical disc focused on the surface of the optical disc 50 is 〇 5 m W . Further, in the present embodiment, as the rotation control method at the time of recording and reproduction for performing the communication, the ZCLV method for changing the number of rotations of the optical disk 50 in each of the areas where the recording is reproduced is employed. The recording and reproducing steps of the information in the recording and reproducing apparatus 1 shown in Fig. 5 are as follows. First, after the optical disk 50 is mounted on the recording/reproducing device -43-(41) 1261832, the motor 12 is followed by a predetermined number of revolutions, followed by the bar code area C of the rotated optical disk 50. Shooting information of the reproduction bar. Code area C. At this time, focusing is performed in such a manner that the position is maintained on the surface of the optical disk. At this time, since the information of the barcode area C is framed by the strip-shaped mark group along the length of half (about 1 mm), the radius of the laser is made. The positional control of the direction can still be produced without strict tracking control. Further, if the information of the area C is recorded in the range of one week, the property of the barcode area C is further improved. Further, as described in the above-described bar code area, regardless of the HL disk or the LH disk, the bar code area C of the optical disk 50 can be formed in such a manner that the range of the strip shape luminosity is the same ,, thereby, information reproduction The middle 'does not have to correspond to the type of the optical disc 50, and can be performed quickly and with high reliability. The reproduced signal 5 detected from the barcode area C is the HL disc or the information of the L disc, that is, The related information is input to the bypass 16 through the gain adjustment circuit 14. In the LH/HL judging circuit 16, it is judged that the optical disc 5 is the H L disc based on the information on the reflected reflectance, and then the judgment result is sent to the gain adjustment circuit ρ to rotate the optical disc 50. Illumination from the optical head]3 illuminates the focus of the laser. The direction of the diameter is sufficient, so that the type of the disc 50 that is formed by the method of forming the reliable C in the bar code area information reproduction even if it is easy to carry out the information (the anti-bar code area of the code group of the code) In the reproduction processing such as gain adjustment of C, the reflectance I LH/HL of the optical disc 50 is judged whether it is the optical disc 50 or the LH disc. The gain adjustment circuit -44 - (42) 1261832 1 4According to the result of the determination, the magnification of the recombination input from the optical pickup 13 is determined. Then, the optical head 3 is moved to the control data area B to control the reproduction control data. The pre-recorded in the control data area pit row is read. The physical format of the disc (recording polarity, anti-recording condition (recording line speed, recording power, recording pulse off information, recording which is stored in the recording and reproducing apparatus is not shown) c. Next, the optical head 1 3 Moving to each address area of the user data area, according to the data of the regenerated control data area B. The information recorded in the user data area A is further described. The optical head 13 is moved. The laser beam is irradiated to the address area A of the user data area, and the light emission signal (regeneration signal) is detected by the optical head 13. The gain adjustment circuit 14 detected by the optical head 13 is amplified at an appropriate magnification and sent. In the data demodulator 18, the amplified regenerator information is sent to the reproduction information control system. In the above-mentioned recording and reproducing apparatus, the information of the control data user area A is performed. Before the reproduction, the type of the optical disc in the bar code area C (the HL disc, or the LH information) can be used to determine the magnification of the appropriate reproduced signal. Thus, the information of the material area B and the user data area A is reproduced and adapted. There is a control unit (such as the gradation rate in the tracking field B), the amplitude, etc., and the information on the reproduction of the bit CD 50 that is specified in the following steps is reproduced to the data demodulation number. When B is related to the data recorded in the disc), the -45-(43) 1261832 should be adjusted to the type of the disc to obtain a regenerative signal of a suitable amplitude. Yes, the information recorded on the optical disc can be reproduced more quickly and with high reliability. In addition, even when detecting the servo signal for tracking the optical disc, it is suitable regardless of the type of the optical disc. In the above-described recording and reproducing apparatus, the optical discs produced in the first to fourth embodiments are respectively mounted on the amplitude detection signal, and the information is recorded and reproduced. Regardless of whether the phase change recording type or the organic dye type optical disc is an HL optical disc or an LH optical disc, user information can be reproduced with high reliability without adjusting the gain. In the first and second embodiments As shown in FIG. 3, when forming a mark group of a strip shape code of the bar code area C. of the optical disk, a laser having a weak intensity (1 5 OmW) is irradiated in a region maintained in an amorphous state. However, the present invention is not limited thereto, and it is not necessary to irradiate a region that is maintained in an amorphous state with a laser. In the above-described first to fourth embodiments, information is recorded in the barcode area C of FIG. 1 within one week of the optical disc. However, the present invention is not limited thereto, and a barcode may be formed in a part of the barcode area C. Tag group. Further, it is also possible to repeatedly record information of one group (information on the disc, information on the reflectance of the optical disc, etc.) to be recorded in the barcode area C. The information is recorded repeatedly in the barcode area C, whereby the reliability of the information of the barcode area C is further improved. -46- (44) 1261832 Sewage Industry Applicability According to the optical disc of the present invention, since the information relating to the reversal rate of the optical disc is recorded in the barcode area, strict tracking control and gain adjustment are not performed. Ί, 'Easy to get this information. As a result, a fast and continuous adjustment of the gain of the reproduced signal can be performed. Therefore, the optical disc of the present invention can be made irrelevant to the 楂_ (HL disc, or LH disc) of the optical disc, and can quickly enter the <<>>> regain control information area and user data area information and search with greater reliability Rail servo signal disc. According to the recording and reproducing apparatus and the reproducing method of the present invention, the information of the reflectance of the optical disc recorded in the strip field of the optical disc is detected without performing the tracking control and the gain adjustment of the optical disc, and the optical disc is judged based on the information. The type (HL disk, or LH disk) determines the appropriate rate of reproduction of the reproduced signal. Thus, the recording and reproducing apparatus and the reproducing method of the present invention are used for regenerating the control data area and the user data area, regardless of the type of the optical disc (the HL disc, or the LH disc), quickly and with high reliability. The information % tracking servo signal is most suitable for the recording and reproducing device and the reproducing method. Further, according to the method of manufacturing an optical disk according to the present invention, in the case of forming a bar-shaped mark by a recording layer formed of a phase change material, the pattern of the intensity adjustment of the light beam is reversed as shown in Fig. 3 in accordance with the type of the optical disk. 'Therefore, the HL disc and the LH disc can form the same information of the reflectance pattern. Further, when a bar-shaped mark is formed on the recording layer formed of the organic dye material, the pattern of the intensity adjustment of the light beam is reversed as shown in FIG. 6 depending on the type of the optical disk, whereby the HL disk, L The disc can be shaped like -47- (45) 1261832 into the same reflectivity pattern. As a result, in the optical disc produced by the manufacturing method of the present invention, when the information of the barcode area is reproduced, it can be performed in accordance with the same reflectance range regardless of the type of the optical disc (the HL disc or the LH disc). regeneration. Therefore, the manufacturing method of the present invention is to manufacture a most suitable manufacturing method of a disc which can update the information of the barcode area with high reliability without performing a gain adjustment or the like corresponding to the type of the optical disc. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 2 is a schematic plan view of a compact disk produced in accordance with a first embodiment; Fig. 2 is a schematic cross-sectional view of a compact disk produced in accordance with a first embodiment; and Fig. 3 is a view showing a compact disk produced in accordance with the first and second embodiments. A reflectance pattern of the information of the barcode area C and a state diagram of the intensity adjustment of the laser for forming the pattern, FIG. 3(a) is a reflectance pattern, and FIG. 3(b) is an LH disk using a phase change recording film. The intensity adjustment pattern of the laser, FIG. 3(c) is a laser intensity adjustment pattern of the HL disk using the phase change recording film; FIG. 4 is a schematic cross-sectional view of the optical disk fabricated according to the second embodiment; FIG. 6 is a view showing a reflectance pattern of information of the barcode area C of the optical disc produced in accordance with the third and fourth embodiments, and a state diagram of intensity adjustment of a laser for forming the pattern. Fig. 6 (a) is a reflectance pattern, Fig. 6 (b) is a laser intensity adjustment pattern of an HL disk using an organic dye recording film, and Fig. 6 (c) is a laser of an LH disk using an organic dye recording film. Intensity Adjustment Pattern - 48 - (46) (46) 1261832 Fig. 7 is a schematic cross-sectional view of a disc manufactured according to the third embodiment. Fig. 8 is a schematic cross-sectional view of the optical disc produced in accordance with the fourth embodiment. [Main component symbol description] Substrate 2 Protective layer] Thermal stability layer 4 Recording layer 5 Second thermal stabilization layer 6 Intermediate layer 7 Thermal diffusion layer 8 UV resin layer 9 Transparent substrate 10 Optical disk 12 Motor 13 Optical head 14 Gain adjustment circuit 15 Servo circuit 16 LH / HL judgment circuit 17 Regenerative signal processing circuit] 8 Data demodulator 19 Address demodulator • 49- (47) 1261832 2 0 Disc 2 1 1st protective layer 2 2 2nd protective layer 2 3 3rd protective layer 3 0 Disc 3 2 Base layer 3 4 Organic pigment recording layer

4 0 光碟 44 有機色素記錄層4 0 Disc 44 Organic Pigment Recording Layer

- 50-- 50-

Claims (1)

1261832 (1) 十、申請專利範圍 1. 一種光碟’其特徵在於其包括： 第1區域，該第1區域記錄使用者資訊； 第2區域，在該第2區域中’沿該光碟的半徑方向延伸 的多個標記沿軌道方向排列’在該第2區域中，記錄有與 該光碟的反射率有關的資訊。 2 .如申請專利範圍第1項所述的光碟，其中，與該光 碟的反射率有關的資訊爲表示第1區域的未記錄狀態的反 射率與記錄狀態的反射率之間的關係的資訊。 3.如申請專利範圍第1項或第2項渐述的光碟，其中在 第1區域，形成有同心圓狀，或螺旋狀的導引溝，通過使 該導引溝沿該光碟的半徑方向偏向，記錄位址資訊。 4 ·如申請專利範圍第3項所述的光碟，其中，上述使 用者資訊記錄於上述導引溝和導引溝間隔中的至少一者中 ，並且第1區域的軌道間距TP，用於資訊的記錄再生的光 束的波長λ ，與聚光透鏡的數値口徑量NA之間，有下述 的關係成立： 0.35χ( λ/ΝΑ) ^ΤΡ^〇.7χ( Λ / ΝΑ) 5.如申請專利範圍第4項所述的光碟，其中，上述使 用者資訊記錄於上述導引溝和導引溝間隔中的兩者中。 6 ·如申請專利範圍第1項或第2項所述的光碟，其中， 上述光碟包括由含有Bi、Ge和Te的相變材料形成的記錄 層，在第1區域和第2區域，設置有該記錄層。 7 ·如申請專利範圍第1項或第2項所述的光碟，其中， -51 - (2) 1261832 上述光碟包括含有有機色素的記錄層，在第1區域和第2區 域，設置有該記錄層。 8 » —種光碟的記錄再生裝置，在沿該光碟的半徑方向 延伸的多個標記沿軌道方向排列的區域’記錄有與該光碟 的反射率有關的資訊，其特徵在於該裝置包括： 光學頭，該光學頭對該光碟照射光束； 信號處理電路，該信號處理電路根據通過該光學頭檢 測的再生信號，進行資訊再生； 增益調整電路，該增益調整電路調整該再生信號的放 大率； 判斷電路，該判斷電路根據與該光碟的反射率有關的 資訊，識別光碟的種類； 上述增益調整電路根據該判斷電路的判斷結果，調整 該再生信號的放大率。 9 ·如申請專利範圍第8項所述的記錄再生裝置，其中 ，與上述光碟的反射率有關的資訊爲表示該光碟內的使用 者資訊區域中的未記錄狀態的反射率與記錄狀態的反射率 之間的關係的資訊。 1 0. —種光碟的再生方法，在沿該光碟的半徑方向延 伸的多個標記沿軌道方向排列的區域，記錄有與該光碟的 反射率有關的資訊，該方法包括下述步驟·· 對該區域，照射光束； 根據來自該區域的反射光，再生與該光碟的反射率有 關的資訊； •52- (3) 1261832 根據已再生的與該光碟的反射率有關的資訊，確定再 生信號的放大率； 按照已確定的再生信號的放大率，對記錄於該區域以 外的區域的資訊進行再生。 1 1 .如申請專利範圍第1 0項之再生方法，其中，與光 碟的反射率有關的資訊爲表示上述光碟內的使罔者資訊區 域中的未記錄狀態的反射率與記錄狀態的反射率之間的關 係的資訊。 1 2。一種光碟的製造方法、其特徵在於該製造方法包 括下述步驟： 在該光碟中，設置記錄膜； 對該光碟的規定區域的記錄膜照射光束，形成沿軌道 方向排列有沿半徑方向延伸的多個標記的標記組； 該標記組作爲與該光碟的反射率有關的資訊而形成。 1 3 .如申請專利範圍第1 2項之製造方法，其中，與該 光碟的反射率有關的資訊爲表示上述光碟的使用者資訊區 域的未記錄狀態的反射率與記錄狀態的反射率之間的關係 的資訊。 1 4 ·如申請專利範圍第1 3項之製造方法，其中，上述 記錄膜由相變材料形成，形成上述標記組的步驟包括根據 上述使用者資訊區域的未記錄狀態的反射率與記錄狀態的 反射率之間的關係，調整上述光束的強度，由此，將表示 上述使用者資訊區域的未記錄狀態的反射率與記錄狀態的 反射率之間的關係的資訊作爲上述標記組，記錄於記錄膜 -53- (4) 1261832 中。 1 5。如申請專利範圍第1 3項之製造方法，其中，上述 記錄層含有有機色素，形成上述標記組的步驟包括根據上 述使用者資訊區域的未記錄狀態的反射率與記錄狀態的反 射率之間的關係，調整上述光束的強度，由此，將表示上 述使用者資訊區域的未記錄狀態的反射率與記錄狀態的反 射率之間的關係的資訊作爲上述標記耝，記錄於記錄膜中 -54-1261832 (1) X. Patent application scope 1. An optical disc' characterized in that it comprises: a first area, the first area records user information; and a second area in which the 'radius along the radius of the optical disc The plurality of extended marks are arranged in the track direction. In the second area, information relating to the reflectance of the optical disk is recorded. 2. The optical disc according to claim 1, wherein the information relating to the reflectance of the optical disc is information indicating a relationship between a reflectance of an unrecorded state of the first region and a reflectance of the recorded state. 3. The optical disc as recited in claim 1 or 2, wherein in the first region, a concentric circular or spiral guiding groove is formed by deflecting the guiding groove along a radial direction of the optical disc , record address information. The optical disc of claim 3, wherein the user information is recorded in at least one of the guiding groove and the guiding groove interval, and the track pitch TP of the first area is used for information. The relationship between the wavelength λ of the recorded and reproduced light beam and the number of apertures NA of the condensing lens is as follows: 0.35 χ ( λ / ΝΑ ) ^ ΤΡ ^ 〇 . 7 χ ( Λ / ΝΑ ) 5. The optical disc of claim 4, wherein the user information is recorded in both of the guiding groove and the guiding groove interval. The optical disc according to claim 1 or 2, wherein the optical disc includes a recording layer formed of a phase change material containing Bi, Ge, and Te, and the first region and the second region are provided with The recording layer. 7. The optical disc according to item 1 or 2 of the patent application, wherein -51 - (2) 1261832 The optical disc includes a recording layer containing an organic dye, and the recording is provided in the first region and the second region. Floor. 8) A recording and reproducing apparatus for an optical disc, wherein a region in which a plurality of marks extending in a radial direction of the optical disc are arranged in a track direction is recorded with information relating to a reflectance of the optical disc, characterized in that the apparatus comprises: an optical head The optical head irradiates the optical beam with a light beam; a signal processing circuit that performs information reproduction based on the reproduced signal detected by the optical head; a gain adjustment circuit that adjusts a magnification of the reproduced signal; The determination circuit identifies the type of the optical disc based on the information on the reflectance of the optical disc. The gain adjustment circuit adjusts the amplification factor of the reproduced signal based on the determination result of the determination circuit. The recording/reproducing apparatus according to claim 8, wherein the information relating to the reflectance of the optical disk is a reflection indicating a reflectance and a recording state of an unrecorded state in a user information area in the optical disk. Information on the relationship between rates. 1 . A method of reproducing a disc, in which a plurality of marks extending in a radial direction of the optical disc are arranged in a track direction, and information relating to a reflectance of the optical disc is recorded, the method comprising the following steps: In the region, illuminating the light beam; reproducing information related to the reflectivity of the optical disk according to the reflected light from the region; • 52- (3) 1261832 determining the reproduced signal based on the regenerated information relating to the reflectance of the optical disk Magnification; The information recorded in an area other than the area is reproduced in accordance with the determined magnification of the reproduced signal. 1 1. The reproducing method of claim 10, wherein the information relating to the reflectance of the optical disc is a reflectance indicating an unrecorded state in the information area of the optical disc and a reflectance of the recorded state. Information about the relationship between. 1 2. A manufacturing method of an optical disc, characterized in that the manufacturing method comprises the steps of: providing a recording film in the optical disc; irradiating the recording film of the predetermined area of the optical disc with a light beam, and forming a plurality of extending in the radial direction along the track direction a set of marked marks; the set of marks is formed as information relating to the reflectivity of the optical disc. 1 . The manufacturing method of claim 12, wherein the information relating to the reflectance of the optical disc is between a reflectance indicating an unrecorded state of the user information area of the optical disc and a reflectance of the recorded state Information about the relationship. The manufacturing method of claim 13, wherein the recording film is formed of a phase change material, and the step of forming the mark group includes a reflectance and a recording state according to an unrecorded state of the user information area. The relationship between the reflectances is adjusted, and the information indicating the relationship between the reflectance of the unrecorded state of the user information region and the reflectance of the recorded state is recorded as the mark group and recorded in the record. Membrane-53- (4) 1261832. 1 5. The manufacturing method of claim 13, wherein the recording layer contains an organic dye, and the step of forming the mark group includes a reflectance between an unrecorded state of the user information region and a reflectance of the recorded state. In relation to the intensity of the light beam, the information indicating the relationship between the reflectance of the unrecorded state of the user information area and the reflectance of the recording state is recorded as the mark 耝 in the recording film -54-
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TW200519937A (en) 2005-06-16
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US7505392B2 (en) 2009-03-17
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